The Frankford Arsenal is a former United States Army ammunition plant located adjacent to the Bridesburg neighborhood of Northeast Philadelphia , Pennsylvania , north of the original course of Frankford Creek .
109-716: The M249 SAW (Squad Automatic Weapon), formally the Light Machine Gun, 5.56 mm, M249 , is the United States Armed Forces adaptation of the Belgian FN Minimi , a light machine gun manufactured by FN Herstal (FN). The M249 SAW is manufactured in the United States by the subsidiary FN Manufacturing LLC, a company in Columbia, South Carolina (FN America), and is widely used in the U.S. Armed Forces. The weapon
218-480: A 200-round belt and plastic ammo box), the M249 is a cumbersome weapon. The M249's air-cooled barrel is equipped with a mechanism to remove and replace the barrel assembly with a spare, this makes it easy for the operator to easily change the barrel on the field when it gets too hot during extensive amounts of fire. The barrel has a rifling twist rate of one turn in 180 mm (7 in). A folding bipod with adjustable legs
327-448: A caliber. At this time, the "Squad Automatic Weapon" (SAW) nomenclature was introduced. Actual design for alternative LMG cartridges did not begin until July 1971. A month later, Frankford Arsenal decided on two cartridge designs for the new LMG: a 6 mm cartridge and a new 5.56 mm cartridge with a much larger case. Neither design was finalized by March 1972, when the Army published
436-559: A city, and contained everything from its own police and fire departments, dining halls, motor pool, and a complete medical facility. The Arsenal was part of the U.S. Arsenal System—dedicated military establishments spread throughout the country to perform specific military missions for the Government. From the beginning, the Frankford Arsenal was involved in the design and manufacture of munitions. As military weapons became more complex,
545-525: A considerable 27.5 lb (12.5 kg) and is about 49 in (120 cm) long with the standard barrel. NAVSPECWAR was reluctant to give up the increased portability of the M60 (which weighed 22.5 lb (10.2 kg) with an overall length of 37.7 in (96 cm) in its shortest configuration) in spite of the M240B's increased reliability. A request was put in for a new machine gun in 2001, and FN responded with
654-617: A crew of at least two in order to operate efficiently. The Browning automatic rifle (BAR), the army's main individual machine gun since its introduction in World War I, was phased out in 1957 with the introduction of the M14 rifle (which had a fully automatic mode.) "Designated riflemen" in every squad were ordered to use their weapons on the fully automatic setting, while other troops were required to use their rifle's semi-automatic mode on most occasions to increase accuracy and conserve ammunition. Because
763-558: A decisive role in the country's history . They helped forge a sense of national unity and identity through victories in the early-19th-century First and Second Barbary Wars . They played a critical role in the territorial evolution of the U.S. , including the American Civil War . The National Security Act of 1947 created the modern U.S. military framework, establishing the National Military Establishment (later
872-469: A depot for the repair of artillery, cavalry and infantry equipment; repair and cleaning of small arms and harnesses ; the manufacture of percussion powder and Minié balls ; and the testing of new forms of gunpowder and time fuses . During the Gettysburg campaign , the arsenal provided tens of thousands of muskets and vast supplies of ammunition for Pennsylvania 's "Emergency Militia" regiments. Among
981-509: A maneuvering unit and fired while handheld, or positioned to remain stationary and provide covering fire for other units. The base load of ammunition was originally 600 rounds, carried in three 200-round boxes. These boxes were carried in soft pouches labeled Case, Small Arms, Ammunition, 200-Round Magazine . The modern load of ammunition carried for the weapon is 1,000 rounds in five 200-round belts, although up to 500 extra rounds may be loaded into 100-round soft pouches. A supply of 929 M249 SAWs
1090-540: A newly designed system was manufactured, complete structural and environmental testing was necessary to insure that the device could withstand the rigors of a fielded environment. This was accomplished in Arsenal's environmental testing and evaluation facility. As the U.S. military–industrial complex grew, the Arsenal could no longer compete as a manufacturing entity. More and more of its programs were farmed out to industry. The Arsenal's functions were eventually transferred to
1199-693: A range of at least 800 m (870 yd). Three 5.56 mm candidate weapons were included with the 6 mm candidates in initial trials: the M16 HBAR ; the Fabrique Nationale de Herstal (FN) Minimi ; and the HK 23A1 . Initial trials ended in December 1974. In February 1976, the Minimi and XM235 were selected for further development, and other designs were eliminated. Opinions on the 6 mm cartridge were mixed due to
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#17330862794761308-509: A result, the SPW cannot be mounted in vehicles or use STANAG magazines. Picatinny rails were added to the feed cover and forearm to accommodate SOPMOD accessories. The weapon also features a detachable bipod. The SPW's lightweight barrel is longer than that of the Para model, giving it a total length of 908 mm (36 in) and a weight of 5.7 kg (13 lb). The Mk 46 is a further development of
1417-548: A scaled-up version of the M249 SAW weighing in at 18.5 lb (8.4 kg) with an overall length of 39.5 in (100 cm). The new design achieved improved reliability compared to M60 variants with a decrease in weight. USSOCOM was expected to receive deliveries of the new variant in August 2003. The M249S is a semi-automatic only variant manufactured for the civilian sport and collector's market. It shares most major components of
1526-611: A single organization. The mission of Army Aviation is to find, fix and destroy any enemy through fire and maneuver and to provide combat support and combat service support in coordinated operations as an integral member of the combined arms team. Major aircraft include the AH-64 Apache , which serves as the Army's attack helicopter, the UH-60 Black Hawk , and the CH-47 Chinook for troop and cargo transport. Army Aviation also flies
1635-453: A special operations force, Army Rangers are generally better equipped than standard infantry, utilizing the FN SCAR rifle. Army Special Forces , commonly known as Green Berets after their iconic headgear, are among the most elite soldiers in the Army. Special Forces conduct: Army Special Forces are trained in military free-fall parachuting and combat diver skillsets. They are considered
1744-540: A squad. While the Marine Corps has 13-man squads, the Army organizes its soldiers into squads of nine and needs considerably more firepower from the squad machine gunners to make up the difference. The Army recognized the limitations of the M249, and in early 2017, the U.S. Army posted a notice soliciting bids for the Next Generation Squad Weapon-Automatic Rifle (NGSW-AR or NGSAR) to replace
1853-399: Is a belt-fed light machine gun. It fires the 5.56×45mm NATO cartridge, usually a combination of one M856 tracer and four M855 ball cartridges fed from M27 linked belts . Belts are typically held in a hard plastic or soft canvas box attached to the underside of the weapon. The M249 can also fire rifle grenades. It fires from an open bolt and is gas operated . When the trigger is pulled,
1962-488: Is a compact version of the M249 SAW intended for use in airborne infantry units. It features a sliding aluminum buttstock , a shorter 13.7 in (348 mm) barrel, a length of 893 mm (35 in) and a weight of 7.1 kg (16 lb). The M249 SPW (Special Purpose Weapon) is a modified version of the M249 SAW designed to meet United States Special Operations Command requirements. The barrel handle, magazine well, and mounting lug were removed to reduce weight. As
2071-434: Is attached near the front of the weapon, though there are provisions for hard-mounting to a M192 Lightweight Ground Mount tripod or vehicle mount. The M249's original gas regulator featured two different gas port sizes; normal and adverse. The normal gas setting has a cyclic rate of fire of around 850 rounds per minute, while the adverse gas setting increases the cyclic rate of fire to around 950–1,150 rounds per minute and
2180-544: Is led by the chairman of the Joint Chiefs of Staff , who is the military head of the armed forces and principal advisor to the president and secretary of defense on military matters. Their deputy is the vice chairman of the Joint Chiefs of Staff . Other members include the chief of staff of the Army , commandant of the Marine Corps , chief of naval operations , chief of staff of the Air Force , chief of space operations , and
2289-509: Is now one of the eight uniformed services of the United States. Should it be called into active duty again, it would constitute a seventh branch of the Armed Forces. The United States Space Force was established as an independent service on 20 December 2019. It is the sixth branch of the U.S. military and the first new branch in 72 years. The origin of the Space Force can be traced back to
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#17330862794762398-450: Is only used in extreme environmental conditions or when heavy fouling is present in the gas tube. The two-position gas regulator was discarded as part of a product improvement program, which made the M249s that received the product improvement kit no longer able to fire at the higher cyclic rate. The rapid rate of fire is around 100 rounds per minute. The sustained rate of fire , the rate at which
2507-513: Is the world's 12th-largest maritime force. The history of the U.S. Armed Forces dates back to 14 June 1775, with the creation of the Continental Army , even before the Declaration of Independence marked the establishment of the United States. The Continental Navy , established on 13 October 1775, and Continental Marines , established on 10 November 1775, were created in close succession by
2616-538: Is unique in that it is a military branch specializing in maritime operations and also a law enforcement agency. The United States Army (USA) is the United States Armed Forces' land force and is the largest and oldest service. Originally established in 1775 as the Continental Army , it consists of one million soldiers across the Regular Army, Army Reserve , and Army National Guard . The Army serves as
2725-700: The 10th Mountain Division , 11th Airborne Division , 25th Infantry Division , 82nd Airborne Division , 101st Airborne Division , and 173rd Airborne Brigade have a cavalry squadron equipped with the Joint Light Tactical Vehicle . The Field Artillery's mission is to destroy, suppress or neutralize the enemy by cannon, rocket or missile fire. Rocket systems include the M142 HIMARS and M270 multiple launch rocket system , which are corps-level assets found in field artillery brigades. Towed artillery includes
2834-523: The 11th Airborne Division , 82nd Airborne Division , and 173rd Airborne Brigade are capable of airborne operations, in cooperation with the U.S. Air Force's transport aircraft. Finally, Infantry Brigade Combat Teams assigned to the 10th Mountain Division specialize in mountain warfare . Standard Infantry Brigade Combat Teams are assigned to the 25th Infantry Division , which offers additional training in jungle warfare . Armored Brigade Combat Teams comprise mechanized infantry battalions mounted in
2943-400: The 4th Infantry Division . Each Armored Brigade Combat Team also possesses a cavalry squadron equipped with M2 Bradleys for scouting and security. Stryker Brigade Combat Teams from the 2nd Infantry Division , 4th Infantry Division , 11th Airborne Division , 2nd Cavalry Regiment , and 3rd Cavalry Regiment have a cavalry squadron equipped with Strykers . Infantry Brigade Combat Teams from
3052-507: The 75th Ranger Regiment are an elite special operations infantry force in the United States Army Special Operations Command , specializing in air assault and airborne infiltration methods. The three primary missions of the 75th Ranger Regiment are special operations raids , forcible entry operations, such as an airfield seizure to enable the Air Force to bring in more forces, and special reconnaissance . As
3161-713: The Air Force Space Command , which was formed 1 September 1982 and was a major command of the United States Air Force. The U.S. Congressional Research Office annually publishes a List of Notable Deployments of U.S. Military Forces Overseas since 1798. Presidential command over the U.S. Armed Forces is established in Article II in the Constitution whereby the president is named as the " Commander in Chief of
3270-558: The Army , Marine Corps , Navy , Air Force , Space Force , and Coast Guard . All six armed services are among the eight uniformed services of the United States , along with the U.S. Public Health Service Commissioned Corps and the NOAA Commissioned Officer Corps . Each of the different military services is assigned a role and domain. The Army conducts land operations. The Navy and Marine Corps conduct maritime operations,
3379-568: The Department of Defense or DoD) headed by the secretary of defense and creating both the U.S. Air Force and National Security Council ; in 1949, an amendment to the act merged the cabinet-level departments of the Army, Navy, and Air Force into the DoD. The president of the U.S. is the commander-in-chief of the armed forces and forms military policy with the DoD and Department of Homeland Security (DHS), both federal executive departments , acting as
M249 light machine gun - Misplaced Pages Continue
3488-527: The Department of the Navy , which is a military department under the leadership of the secretary of the Navy and the under secretary of the Navy . The U.S. Marine Corps itself is led by the commandant of the Marine Corps and the assistant commandant of the Marine Corps , both generals who are advised by the sergeant major of the Marine Corps . The Marine Corps statutory mission is outlined in 10 U.S.C. § 5063 and as originally introduced under
3597-683: The FIM-92 Stinger man-portable air-defense system , AN/TWQ-1 Avenger for short range air defense , and the counter rocket, artillery, and mortar 20mm gun system. The Iron Dome provides air defense against rockets, artillery, mortars, missiles, and unmanned aerial vehicles. The MIM-104 Patriot is capable of defeating a wide range of threats including aircraft, helicopters, UAVs, ballistic and cruise missiles, and Weapons of Mass Destruction. The Terminal High Altitude Area Defense protects strategic critical assets by conducting long-range endo-and-exo-atmospheric engagements of ballistic missiles using
3706-552: The Heckler & Koch HK416 –based weapons for testing. The Marines started fielding the M27 in 2010, but kept both weapons in the inventory due to the M249's greater ammunition capacity and higher sustained fire rate. Rifle companies are typically issued 27 IARs and six SAWs. The Army passed on the concept of the IAR, believing automatic rifle with a magazine would lower the effectiveness and firepower of
3815-600: The M119 howitzer in infantry brigade combat teams and the M777 howitzer found in both infantry and Stryker brigade combat teams. The M109 self-propelled howitzer is utilized in armored brigade combat teams. During the Cold War, Army field artillery was responsible for the service's ballistic missile programs, including the PGM-11 Redstone , which was the first large ballistic missile in
3924-660: The M2 Bradley infantry fighting vehicle . Divisions with Armored Brigade Combat Teams include the 1st Infantry Division , 3rd Infantry Division , 4th Infantry Division , 1st Armored Division , and 1st Cavalry Division . Stryker Brigade Combat Teams are centered around Stryker infantry battalions operating out of the Stryker . Divisions with Stryker Brigade Combat Teams include the 2nd Infantry Division , 4th Infantry Division , 11th Airborne Division , 2nd Cavalry Regiment , and 3rd Cavalry Regiment . United States Army Rangers with
4033-681: The MQ-1C Gray Eagle drone. A specialized unit within Army Aviation, the 160th Special Operations Aviation Regiment (Airborne) serves as a special operations unit and operates modified variants of the MH-60 Black Hawk, MH-47 Chinook, and the MH-6 Little Bird . The U.S. Army is organized into four major Army Commands, nine Army Service Component Commands which serve as the Army component and joint force land component commanders for
4142-519: The Marine Corps Reserve . The Marine Corps maintains a very close relationship with the U.S. Navy, its sister service in the Department of the Navy. Although the Marine Corps has previously operated as an independent land force alongside the Army, its primary purpose is to serve as part of a unified naval service alongside the Navy in the maritime domain. The U.S. Marine Corps is organized under
4251-538: The National Security Act of 1947 , with its three primary areas of responsibility including: Frankford Arsenal Opened in 1816 on 20 acres (8.1 ha) of land purchased by President James Madison , it was the center of U.S. military small-arms ammunition design and development until its closure in 1977. Among the many other products manufactured at the arsenal were fire-control and range-finding instruments, and gauges for these components. With
4360-510: The Picatinny Arsenal in New Jersey . The Fire Control and Ammunition Engineers were transferred to Picatinny Arsenal until they were retired. During the presidential campaign of 1976 , vice presidential candidate Walter Mondale stood in front of the Frankford Arsenal and promised that it would remain open. The Carter /Mondale ticket won the election but the promise was not fulfilled;
4469-769: The Second Continental Congress in order to defend the new nation against the British Empire in the American Revolutionary War . These forces demobilized in 1784 after the Treaty of Paris ended the Revolutionary War. The Congress of the Confederation created the current United States Army on 3 June 1784. The United States Congress created the current United States Navy on 27 March 1794 and
M249 light machine gun - Misplaced Pages Continue
4578-539: The chief of the National Guard Bureau . The commandant of the Coast Guard is not an official member of the Joint Chiefs, but sometimes attends meetings as one of the military service chiefs. The senior enlisted advisor to the chairman is the most senior enlisted member in the United States Armed Forces. Leadership of the Armed Forces, to include the president of the United States, the secretary of defense ,
4687-523: The deputy secretary of defense , deputy secretary of homeland security , and vice chairman of the Joint Chiefs of Staff . Military leadership, including the secretary of defense, the secretary of Homeland Security, and chairman of the Joint Chiefs of Staff also sit on the National Space Council . Unified combatant commands are joint military commands consisting of forces from multiple military departments, with their chain of command flowing from
4796-603: The joint force land component , Navy components are typically dual-hatted as the joint force maritime component , and Air Force components are typically dual-hatted as the joint force air component , with the theater special operations command dual-hatted as the joint force special operations component, and Space Force component typically dual-hatted as the joint force space component. Combat support agencies are Department of Defense agencies with combat support missions that service operating forces planning or conducting military operations. This includes support during conflict or in
4905-543: The secretary of Homeland Security and chairman of the Joint Chiefs of Staff are members of the United States National Security Council , which advises the president on national security, military, and foreign policy matters. The national security advisor , the homeland security advisor , and the deputy national security advisor may also be members of the United States Armed Forces. The National Security Council Deputies Committee also includes
5014-410: The sergeant major of the Army . The Army's primary responsibility is to conduct prompt and sustained land combat as part of the joint force. Army landpower focuses on destroying an enemy's armed forces, occupying its territory, and breaking the will of an adversary. The five core competencies of the Army are: The thirteen specified functions of the Army are: The Infantry Branch forms the core of
5123-523: The unified combatant commands , and thirteen direct reporting units. The United States Marine Corps (USMC) serves as the U.S. Armed Forces' naval land force, responsible for executing amphibious warfare and operating in the maritime littorals in support of the U.S. Navy. Originally established in 1775 as the Continental Marines , the Marine Corps consists of the Regular Marine Corps and
5232-509: The 1960s, the introduction of a machine gun into the infantry squad was examined in various studies. Most light machine gun experiments concentrated on the Stoner 63 light machine gun, a modular weapon that could be easily modified for different purposes. The Stoner 63 LMG saw combat for a brief period in Vietnam with the Marine Corps, and later on a wider scale with the U.S. Navy SEALs . In 1968,
5341-486: The Air Force through its Air and Missile Defense Commands and the Space Force through Army Space and Missile Defense Command, given their shared missile defense and space roles. In 1962, Air Defense Artillery achieved the first intercept of a ballistic missile with a nuclear-tipped Nike Zeus and operated the Nike Zeus as an anti-satellite weapon after completing a successful intercept in 1963. Army Aviation, distinct from
5450-416: The Armed Forces principal land service, responsible for conducting land warfare operations. The U.S. Army is organized under the Department of the Army , which is a military department under the leadership of the secretary of the Army and under secretary of the Army . The U.S. Army itself is led by the chief of staff of the Army and vice chief of staff of the Army , both generals who are advised by
5559-640: The Army James R. Ambrose suspended M249 production pending the development of a product improvement program (PIP.) Congress removed funds for the M249 from the Fiscal Year 1986 defense budget, then retroactively set aside the program's funding for other purposes. Over 1,100 M249s already issued were to remain in use, but be retrofitted with the PIP kit when it became available. Over 7,000 M249s were to stay in storage at depots until corrective changes could be made. The PIP kit
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#17330862794765668-520: The Army Small Arms Program developed plans for a new 5.56 mm caliber LMG, though no funds were allocated (5.56 mm ammunition was viewed as underpowered by many in the armed forces.) Studies of improved 5.56 mm ammunition with better performance characteristics began. The earliest reference to studies of other LMG calibers did not appear until 1969. In July 1970, the U.S. Army finally approved development of an LMG, but did not specify
5777-577: The Army and Navy of the United States, and of the Militia of the several States, when called into the actual Service of the United States." The United States Armed Forces are split between two cabinet departments, with the Department of Defense serving as the primary cabinet department for military affairs and the Department of Homeland Security responsible for administering the United States Coast Guard . The military chain of command flows from
5886-624: The Department of Defense's military departments. The United States Coast Guard is nominally under the Department of Homeland Security , but may be transferred to the Department of Defense's Department of the Navy (which is the civilian entity that oversees the coequal U.S. Marine Corps and U.S. Navy) at the direction of the President or Congress. With the exception of the Coast Guard, the military services only organize, train, and equip forces. The unified combatant commands are responsible for operational control of non-service retained forces. Each of
5995-649: The FN XM249 was selected as the best choice for future development on the grounds of performance and cost, while the HK XM262 reportedly came a close second. In September, FN was awarded a "maturity phase" contract for further development of the XM249, and testing of the new weapon began in June 1981. The official adoption took place in February 1982. The FN Minimi entered U.S. Army service as
6104-451: The M14 and M16 were not designed with sustained automatic fire in mind, they often overheated or jammed. The 20-round and 30-round magazines of these weapons limited their sustained automatic effectiveness when compared to belt-fed weapons. The Army decided that an individual machine gun, lighter than the M60, but with more firepower than the M16, would be advantageous; troops would no longer have to rely on rifles for automatic fire. Through
6213-499: The M249 SAW in 1984, and was adopted by the U.S. Marine Corps in 1985. The U.S. production model has a different butt from that of the regular Minimi. It is manufactured in the FN factory in Columbia, South Carolina . Although found to be reliable and accurate, multiple safety hazards were identified in the design, including sharp edges and an exposed hot barrel. Soldiers complained that the front sight required special tools to be adjusted. On August 23, 1985, then- U.S. Under Secretary of
6322-410: The M249 SAW with the exception of the firing mechanism and the addition of welded internal components to prevent automatic conversion. Notably, this variant retains the ability to be belt fed, an uncommon feature in civilian firearms. United States Armed Forces The United States Armed Forces are the military forces of the United States . The armed forces consist of six service branches :
6431-417: The M249 SPW that features minor changes. The program that led to both the Mk 46 and Mk 48 was headed by the US Naval Special Warfare Command (NAVSPECWAR.) The Mk 46 retains the standard M249 SAW plastic buttstock instead of the collapsible buttstock used on the SPW. The Picatinny rail forearm differs slightly from the SPW. The Mk 46 has the option of using the lighter SPW barrel or a thicker, fluted barrel of
6540-491: The M249 in USMC service. In 2022, the U.S. Army selected the SIG Sauer XM250 to replace the M249 SAW. In 1965, the U.S. Army and U.S. Marine Corps' primary machine guns were the M2 Browning and M60 . The M2 was a large-caliber heavy machine gun , usually mounted on vehicles or in fixed emplacements. The M60 was a more mobile general-purpose machine gun , intended to be carried by troops to provide heavy automatic fire. Both firearms were very heavy and usually required
6649-454: The M249's reliability, defined as level of soldier confidence their weapon will fire without malfunction, and 64 percent (218 troops) were confident in its durability, defined as level of soldier confidence their weapon will not break or need repair. Both factors were attributed to high levels of soldiers performing their own maintenance. 60 percent of M249 users offered recommendations for improvements. Seventeen percent of requests were for making
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#17330862794766758-417: The M249. In July 2018, the Army awarded contracts to six companies including Textron, head of the preceding LSAT program where they made development leaps with cased telescoped (CT) ammunition, for NGSW-AR and ammunition prototypes. The stated requirements included: In April 2022, the U.S. Army selected SIG Sauer as the winner of the competition. Their automatic rifle is designated the XM250 . The M249 SAW
6867-405: The Marine Corps specializing in amphibious and maritime littoral operations primarily for supporting the Navy. The Air Force conducts air operations. The Space Force conducts space operations. The Coast Guard is unique in that it specializes in maritime operations and is also a law enforcement agency. From their inception during the American Revolutionary War , the U.S. Armed Forces have played
6976-443: The President of the United States to the secretary of defense (for services under the Defense Department) or secretary of homeland security (for services under the Department of Homeland Security), ensuring civilian control of the military . Within the Department of Defense, the military departments ( Department of the Army , United States Department of the Navy , and Department of the Air Force ) are civilian led entities that oversee
7085-414: The SPW variant, noting that its "short barrel and forward pistol grip allowed for very effective use of the SAW in urban terrain". At the National Defense Industrial Association in 2007, Lieutenant Colonel Al Kelly of the 1st Battalion, 17th Infantry gave a presentation describing the M249 as having "good range, excellent reliability" and an "excellent tracer". He said that a cloth pouch was preferred over
7194-476: The Soldier Enhancement Program and Rapid Fielding Initiative. These include an improved bipod, 100– and 200–round fabric "soft pouches" (to replace the original plastic ammunition boxes), and Picatinny rails for the feed tray cover and forearm so that optics and other accessories may be added. An extensive maintenance program intended to extend the service life of M249 SAWs has been carried out, especially units that suffered from wear due to heavy use. In particular
7303-424: The U.S. Air Force and its predecessors, began as part of the field artillery in 1942. Small spotter planes were used to spot for artillery and naval bombardment, as well as to perform observation. These few aircraft formed the core of Army Aviation once the U.S. Air Force gained independence. In 1983, the Army created the Aviation Branch, for the first time since the Air Force's independence consolidating aviation under
7412-528: The U.S. arsenal, the MGM-31 Pershing , and the Pershing II . In 2023, the Army is intending to field the Long-Range Hypersonic Weapon and has reestablished larger artillery formations like the 56th Artillery Command . The Air Defense Artillery is responsible for defending geopolitical assets and providing maneuver forces with the freedom to move on the battlefield by deterring the enemy and destroying aerial threats, missile attacks, and surveillance platforms. Weapons employed by Air Defense Artillery include
7521-519: The U.S. between the ages of 18 and 25. The U.S. Armed Forces are considered the world's most powerful military, especially since the end of the Cold War . The military expenditure of the U.S. was US$ 916 billion in 2023, the highest in the world, accounting for 37% of the world's defense expenditures . The U.S. Armed Forces has significant capabilities in both defense and power projection due to its large budget, resulting in advanced and powerful technologies which enable widespread deployment of
7630-421: The United States is the United States Armed Forces' commander-in-chief . The United States Coast Guard traces its origin to the formation of the Revenue Cutter Service on 4 August 1790, which merged with the United States Life-Saving Service on 28 January 1915 to establish the Coast Guard. The United States Air Force was established as an independent service on 18 September 1947; it traces its origin to
7739-417: The arsenal closed for U.S. government use in 1977. Before closing, many custom designs were developed and tested, including the use of aluminum and steel for the manufacture of cartridge cases. The northernmost part of the site was assumed by the Pennsylvania Fish and Boat Commission for use as a boat ramp and fishing spot on the Delaware River . In August 2018, six buildings on the southernmost part of
7848-551: The bolt and bolt carrier move forward under the power of the recoil spring. A cartridge is stripped from the belt, chambered, and discharged, sending a bullet down the bore. Expanding propellant gases are diverted through a hole in the barrel into a chamber. This pressure moves a piston providing the energy to extract and eject the spent casing as well as advance the belt and compress the recoil spring, thus preparing for subsequent shots. At 41 in (1,041 mm) long and 17 lb (8 kg) in weight (22 lb (10 kg) including
7957-399: The center's role expanded to cover the development of a whole range of the Army's more advanced weapon systems. The Arsenal contained the world-famous Pitman-Dunn Laboratories along with a number of other R&D departments. Arsenal scientists and engineers designed and developed everything from basic materials to LASER-guided ballistics, all produced entirely in-house from the concept phase to
8066-410: The coequal military service branches organized within each department. The military departments and services are responsible for organizing, training, and equipping forces, with the actual chain of command flowing through the unified combatant commands . The Joint Chiefs of Staff , although outside the operational chain of command, is the senior-most military body in the United States Armed Forces. It
8175-662: The conduct of other military activities related to countering threats to U.S. national security. This mission is focused on providing support to echelons at the CCMD level and below and may not encompass the full scope of the CSA's mission. The United States Armed Forces is composed of six coequal military service branches. Five of the branches, the United States Army , United States Marine Corps , United States Navy , United States Air Force , and United States Space Force , are organized under
8284-469: The current United States Marine Corps on 11 July 1798. All three services trace their origins to their respective Continental predecessors. The 1787 adoption of the Constitution gave Congress the power to "raise and support armies," to "provide and maintain a navy", and to "make rules for the government and regulation of the land and naval forces", as well as the power to declare war . The President of
8393-592: The desert seems to be the main complaint. The PIP and Para versions of the M249 were used in the Iraq war since the invasion . By 2004, many M249s had been in service for almost 20 years and were becoming increasingly unreliable. Soldiers were requesting replacements and new features, and there are reports of soldiers holding their weapons together with duct tape. The lethality of the 5.56 mm ammunition has been called into question by reports of enemy soldiers still firing after being hit multiple times. As in previous conflicts,
8502-401: The different military services is assigned a role and domain. The U.S. Army conducts land operations, while the U.S. Navy and U.S. Marine Corps conduct maritime operations, with the Marine Corps specializing in amphibious and maritime littoral operations in support of the Navy. The U.S. Air Force conducts air operations, while the U.S. Space Force conducts space operations. The U.S. Coast Guard
8611-560: The fielding of the equipment. New portable and embedded computer applications saw the development of the LASER rangefinder, fielded artillery computational machines (FADAC) and radar systems. During the Vietnam War, experiments in caseless ammunition , far-infrared low-light-level technologies, and advanced LASER applications were under development. The labs were supported by a full range of first-class drafting and machine shops scattered throughout
8720-453: The force around the world, including around 800 military bases outside the U.S. The U.S. Air Force is the world's largest air force, followed by the U.S. Army Aviation Branch . The U.S. Naval Air Forces is the fourth-largest air arm in the world and is the largest naval aviation service, while U.S. Marine Corps Aviation is the world's seventh-largest air arm. The U.S. Navy is the world's largest navy by tonnage . The U.S. Coast Guard
8829-584: The formation of the Aeronautical Division, U.S. Signal Corps , which was formed 1 August 1907 and was part of the Army Air Forces before being recognized as an independent service in the National Security Act of 1947. The United States Public Health Service Commissioned Corps was formerly considered to be a branch of the United States Armed Forces from 29 July 1945 until 3 July 1952, and
8938-623: The front of the weapon (an M192 LGM tripod is also available.) The M249 SAW is normally belt-fed , although it is technically compatible with STANAG magazines (such as those used in the M16 and M4 .) The M249 SAW has seen action in major conflicts involving the United States since the U.S. invasion of Panama in 1989. In 2009, the United States Marine Corps selected the M27 Infantry Automatic Rifle to partially replace
9047-418: The gunner can fire continuously without overheating, is around 50 rounds per minute. The product improvement program (PIP) kit replaced the original steel tubular stock with a plastic stock based upon the shape of the heavier M240 machine gun . The change in stocks allowed for the addition of a hydraulic buffer system to reduce recoil. In addition, the dual gas port settings were reduced to only one; M249s with
9156-525: The innovations extensively tested at the Arsenal was the Gatling Gun , an early form of machine gun that saw extensive service in the Indian Wars . During World War I and World War II , the arsenal was again busy supplying the war efforts, providing a major source of jobs and income for the region. At times, employment reached 22,000. The Frankford Arsenal was an entity unto itself, a virtual city within
9265-518: The logistical implications of having multiple calibers in infantry service. In June, it was requested that the SAW specifications document be revised to emphasize standard 5.56 mm ammunition. In October, the requested revisions were approved, and bids were solicited for the conversion of the Rodman XM235 to 5.56 mm. Production of the converted XM235 was awarded to Ford Aerospace , and its designation
9374-416: The many buildings of the center. Everything from milling to electroplating, to multi-layer printed circuit board fabrication could be accomplished by "The Shops". The Optical Lens Design Facility was one of the finest in the country. The Optical Assembly shop also refurbished field binoculars. The Fire Control department literally wrote the glass and optics standards used throughout the United States. Once
9483-663: The most versatile special operations force in the entire world, operating as a multi-purpose force since 1952. The Armor Branch traces its history back to the United States Cavalry and are responsible for tank and cavalry reconnaissance operations. The U.S. Army fields the M1 Abrams main battle tank in Armored Battalions as part of Armored Brigade Combat Teams across the 1st Armored Division , 1st Cavalry Division , 1st Infantry Division , 3rd Infantry Division , and
9592-648: The outbreak of the Civil War , the arsenal 's commander, Josiah Gorgas , resigned and joined the Confederate States Army in deference to the wishes of his Alabama -born wife and reported to the Confederate capital in Richmond with a large supply of U.S. Army guns and ammunition. By the end of the war, the arsenal employed over 1,000 workers. It served as a major site for the storage of weapons and artillery pieces;
9701-550: The plastic box for holding linked ammunition, and that "knock-down power is poor, but is compensated by rate of fire". In December 2006, the Center for Naval Analyses (CNA) released a report on U.S. small arms in combat. The CNA conducted surveys on 2,608 troops returning from combat in Iraq and Afghanistan over the past 12 months. Only troops who fired their weapons at enemy targets were allowed to participate. Three hundred forty-one troops were armed with M249 SAWs, making up 13 percent of
9810-438: The president, to the secretary of defense, to the commanders of the combatant commands. Each service organizes, trains, and equips forces that are then presented to the unified combatant commands through service component commands. Special Operations Command and Cyber Command also present theater special operations commands or joint force headquarters – cyber to other combatant commanders. Army components are typically dual-hatted as
9919-428: The principal organs by which military policy is carried out. The U.S. Armed Forces are one of the world's largest military forces in terms of personnel. They draw their personnel from a large pool of professional volunteers . The U.S. has used military conscription , but not since 1973. The Selective Service System retains the power to conscript males, requiring the registration of all male citizens and residents of
10028-447: The product improvement kit can no longer fire at a higher cyclic speed. A handguard was added above the barrel to prevent burns, and the formerly fixed barrel changing handle was swapped for a folding unit. Certain parts were bevelled or chamfered to prevent cutting soldiers' hands and arms. Other changes involved the bipod, pistol grip, flash suppressor , and sights. Over the years, additional modifications have been introduced as part of
10137-498: The property were purchased by Alliance Partners HSP for use as a light-industrial and office park . Each round of ammunition was marked with the headstamp "F A" on its base, denoting that it was produced at the Frankford Arsenal. Early metallic cartridges produced at Frankford were not head-stamped. These were either Martin or Benet primed copper cases. Early cartridges were stamped "F" for Frankford, or "R" for rifle, or "C" for carbine. Ammunition produced prior to World War I
10246-595: The same length. The Mk 48 is a variant of the Mk46 rechambered in 7.62×51mm NATO . It is officially classified as an LWMG (Light Weight Machine Gun) and was developed as a replacement for the Mk 43 Mod 0/1 , itself a variant of the M60 machine gun. Reliability issues with the M60 and its design variants led the US Army to replace it with the M240B in the mid-1990s. The M240B, however, weighs in at
10355-528: The sandy environment causes the M249s and other weapons to clog up and jam if they are not cleaned frequently. Operation Iraqi Freedom PEO Soldier Lessons Learned , a report on the performance of weapons in the Iraq War, was published by Lieutenant Colonel Jim Smith of the U.S. Army in May 2003. Smith spoke positively of the M249, claiming that it "provided the requisite firepower at the squad level as intended". He praised
10464-762: The service's land combat power. U.S. Army infantry are generally equipped with the M4 carbine and M249 light machine gun , which will be replaced by the XM7 rifle and XM250 . Infantry is a core part of the Army's Brigade Combat Teams . The most numerous variant, the Infantry Brigade Combat Team, comprises light infantry battalions who fight on foot. Infantry Brigade Combat Teams of the 82nd Airborne Division are air assault capable, with infantry soldiers being transported by U.S. Army Aviation UH-60 Black Hawk and CH-47 Chinook helicopters. Infantry Brigade Combat Teams of
10573-544: The specifications document for the planned SAW. The 6 mm cartridge design was eventually approved in May of that year. Prior to July 1972, SAW development contracts were awarded to Maremont, Philco Ford , and the Rodman Laboratory at Rock Island Arsenal , which produced the XM233, XM234, and XM235 , respectively. Designs were required to weigh less than 20 lb (9.1 kg) including 200 rounds of ammunition, and have
10682-399: The survey. 71 percent of M249 users (242 troops) reported that they were satisfied with the weapon. 40 percent of users preferred feeding the SAW with the soft 100-round pouch, while 21 percent chose the soft and hard 200-round pouches each. 60 percent (205 troops) were satisfied with handling qualities, such as handguards, size, and weight. Of those dissatisfied, just under half thought that it
10791-440: The warping of the receiver rails on the early models was a defect that occurred in heavily used first-generation M249s. This defect however has been eliminated on later models and is no longer present on the current-issue M249, which has reinforced rails and full-length welding rather than spot welding . A replacement of the M249's buttstock that is redesigned to be adjustable in length is also available. The M249 Para (Paratrooper)
10900-473: The weapon lighter, and another 17 percent were for more durable belt links and drums, as well as other modifications, such as a collapsible stock. In 2009, the U.S. Marine Corps selected the M27 Infantry Automatic Rifle , a lighter, magazine-fed rifle to supplement and partially replace the M249. With plans to buy up to 4,100 IARs to complement and partially replace its 10,000 M249s, of which 8,000 will remain in service, held at platoon level, it acquired 450 of
11009-506: The world's largest air-transportable X-band radar. The Ground-Based Midcourse Defense is an anti-ballistic missile system operated by Army Space and Missile Defense Command to defend the United States homeland against an intercontinental ballistic missile attack. Major Air Defense Artillery units include the 32nd Army Air and Missile Defense Command and Army Space and Missile Defense Command's 100th Missile Defense Brigade . Air Defense Artillery has an extremely close relationship with
11118-586: Was changed to XM248. A new M16 HBAR variant, the XM106, was developed in 1978, and soon after, Heckler & Koch lobbied to include a 5.56 mm conversion of its HK 21A1 , instead of the standard 7.62 mm NATO ammunition it was built for, in future SAW testing. The latter model was designated the XM262. At this time, the Minimi received the designation XM249. Testing of the four candidates resumed in April 1979. In May 1980,
11227-779: Was criticized for a number of issues: the blank firing adapter fitted poorly, the bipod was fragile, the sling attachment was awkward, and there were many slots and gaps that accumulated dirt. Some claimed that the heavy-barrelled version of the M16 rifle was a more effective light machine gun. The M249 SAW was not used consistently before the 1991 Gulf War , though it has been used in every major U.S. conflict since. American personnel in Somalia in 1993, Bosnia in 1994, Kosovo in 1999, Afghanistan in 2001 and Iraq since 2003 have been issued M249s. Surplus weapons were donated to Bolivia , Colombia and Tunisia . Tactically, SAWs are either carried with
11336-418: Was eventually developed and implemented, and production of the M249 resumed. In 1994 the M249 squad automatic weapon was re-designated the M249 light machine gun. Initial reactions to the gun were mixed: it fulfilled the light machine gun role well when fired from a prone position , but was not as effective when fired from the shoulder or hip. It was praised for its extreme durability and massive firepower, but
11445-415: Was introduced in 1984 to address a lack of sustained automatic fire capability at the squad level. The M249 SAW combines the rate of fire of a machine gun with the accuracy and portability of an assault rifle . The M249 SAW is gas operated and air-cooled. It features a quick-change barrel (allowing the operator to rapidly replace an overheated or obstructed barrel) and a folding bipod attached to
11554-588: Was issued to personnel from the U.S. Army and Marine Corps during the Persian Gulf War. Although exposure to combat was scarce, M249 gunners who were involved in fighting mainly used their weapons to provide cover fire for friendly maneuvering troops from fixed positions, rather than maneuvering with them. There were many complaints about the weapons clogging up with sand after prolonged use in the desert environment. The standard squad automatic weapon in Afghanistan
11663-479: Was released by Lieutenant Colonel Charlie Dean and SFC Sam Newland of the U.S. Army Natick Soldier Center in 2002. They found that 54% of SAW gunners had problems maintaining their weapons, and 30% reported that the gun rusted easily. Soldiers reported ammunition boxes rattling and falling off. 80% percent of soldiers surveyed were pleased with the weapon's accuracy and lethality, yet only 64% claimed they were "confident in their weapon". Weapons clogging up with sand in
11772-484: Was the M249 with PIP kit, which served alongside its heavier counterpart, the M240 machine gun . Most M249s were given a collapsible buttstock immediately prior to the invasion to reduce its length and make the weapons more practical for parachuting and close-quarters combat. Special Operations troops typically favored the shorter Para version of the weapon, which weighs much less. A report entitled Lessons Learned in Afghanistan
11881-579: Was too heavy. M249 users had the lowest levels of satisfaction with weapon maintainability at 70 percent (239 troops), most due to the difficulty in removing and receiving small components and poor corrosion resistance. The SAW had the highest levels of stoppages at 30 percent (102 troops), and 41 percent of those that experienced a stoppage said it had a large impact on their ability to clear the stoppage and re-engage their target. Sixty-five percent (222 troops) did not need their machine guns repaired while in theater. Sixty-five percent (222 troops) were confident in
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