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26-548: Commercially the G41 was not as successful as the preceding Heckler & Koch service rifle designs with a similar operating mechanism. It was rejected by various military trial programmes and it never won a major military production contract. Assembly of the G41 has been discontinued by Heckler & Koch; however, production rights to the rifle were acquired by the Italian arms manufacturer Luigi Franchi . The G41's engineering origins lay in

52-510: A 305 mm (1:12 in) twist for use with American .223 Remington/5.56×45mm ammunition with the M193 55 grain projectile. The barrel end of the chamber is fluted to assist in the extraction of spent cartridges. The barrel is equipped with a flash suppressor that is also designed to launch rifle grenades . The firearm is equipped with a relatively low iron sight line that consists of a Drehvisier rotary rear drum and hooded front post. The rear sight

78-638: A NATO pattern optics mount (meeting STANAG 2324 ) that replaced HK’s claw-mount system used to mount day (typically the Hensoldt 4×24 telescopic sight) or night aiming optics. The Hensoldt Fero 4×24 telescopic sight and mount assembly were developed for designated marksman use. The Fero elevation knob features Bullet Drop Compensation (BDC) settings for 100–600 metres (109–656 yd) in 100 metres (109 yd) increments calibrated for 5.56×45mm NATO ball ammunition. Many accessories are based on NATO standard or previously issued items. The rifle can be fitted with

104-554: A barrel-mounted bipod based on the one issued with the M16A1's cleaning kit. It also uses the bayonet from the G3. It also can mount the FERO Z24-G 4×24 optical sight on a proprietary detachable bracket on the receiver and a clip-on winter trigger. The G41 can also mount a detachable 40 mm HK79 grenade launcher that replaces the synthetic forearm. The weapon in this configuration is known as

130-451: A central coil. This reduced recoil. The revised buttstock on the G41 is held in place by two pins. Unlike the earlier HK33, the G41’s pistol grip assembly is not retained by a pin at the front of the assembly behind the magazine well housing and can be removed by the user during a field strip. The spent cartridge casing extractor is installed inside the bolt head, while the tilting lever ejector

156-467: A large capacity and a corresponding high spring pressure pushing the rounds to the top of the magazine, can be quite difficult. A number of devices are available to make this task simpler. These are sometimes called speedloaders but are more commonly known as magazine loaders, stripper clips, spoons, or stripper clip guides. There are a wide range of both commercial and military type loading tools available for STANAG magazines. For example; draft STANAG 4181

182-582: A new magazine design in July 2013 to address feeding issues of older designs with the new M855A1 Enhanced Performance Round . It was first made public in 2014 and completed development in mid-2016 as the Enhanced Performance Magazine. The magazine uses a blue follower and a tan body which presents the rounds with a better angle to the weapon's feedway, preventing the hardened steel tip of the EPR from contacting

208-593: A perceived lack of durability and a tendency to malfunction unless treated with a level of care that may not be practical under combat conditions. Because STANAG 4179 is only a dimensional standard, production quality from manufacturer to manufacturer is not uniform. As a result, in March 2009, the U.S. military began to accept delivery of improved STANAG magazines. To increase reliability, these magazines incorporate heavier, more corrosion resistant springs and new tan-colored anti-tilt followers. ARDEC began development of

234-505: A proper and safe functioning parameters bandwidth Heckler & Koch offer a variety of locking pieces with different mass and shoulder angles. The angles are critical and determine the unlock timing and pressure curve progression as the locking pieces act in unison with the bolt head carrier. The G41 bolt assembly is lighter than the HK33 bolt assembly. The redesigned bolt was paired with a new recoil spring which consisted of five wound strands around

260-470: A side-folding heavy-gauge wire carrying handle near its point of balance which resembles that of the FN FAL . It also has a "hold-open" bolt catch which holds the bolt open after the last round in the magazine has been fired (the bolt release button is just above the magazine release) and has a spring-loaded polymer dust cover that seals the ejection port from debris. Despite reducing the weight of some components,

286-407: A wedge-shaped locking piece, attached to a heavy bolt head carrier. Based on the geometric relationship arising from the angles of the roller contact surfaces of the wedge-shaped locking piece locking piece and the barrel extension recesses, the rearward motion of the bolt head is delayed by a predetermined ratio. Thus during the same period of time, the bolt head carrier moves significantly faster than

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312-493: Is a stub . You can help Misplaced Pages by expanding it . This article related to a firearm manufacturing company is a stub . You can help Misplaced Pages by expanding it . STANAG magazine A STANAG magazine or NATO magazine is a type of detachable firearm magazine proposed by NATO in October 1980. Shortly after NATO's acceptance of the 5.56×45mm NATO rifle cartridge, Draft Standardization Agreement ( STANAG ) 4179

338-402: Is contained in the trigger housing. The rifle is hammer-fired and has a trigger group with a fire control selector that enables selecting safe, semi-automatic, burst and continuous fire modes. The fire selector's positions are marked with bullet pictograms and it also serves as a manual safety against unintentional discharge. The selector is ambidextrous and its lever is mirrored on both sides of

364-649: Is mechanically adjustable for both windage and elevation with the help of tools. This deliberately prevents non-armorers from (re)zeroing the iron sight line. The rotary drum features an open V-notch (numbered 1) for rapid target acquisition, close range, low light and impaired visibility use and three apertures (numbered 2, 3 and 4) used for: 200–400 metres (219–437 yd) in 100 metres (109 yd) increments for more precise aiming. The 1 V-notch and 2 or 200 metres (219 yd) aperture settings have an identical point of aim. The V-notch and apertures are calibrated for 5.56×45mm NATO ball ammunition. The receiver housing has

390-695: Is only an interface, dimensional and controls (magazine latch, bolt stop, etc.) requirement. Therefore, it not only allows one type of magazine to interface with various weapon systems, but also allows STANAG magazines to be made in various configurations and capacities. The standard capacities of STANAG -compatible magazines are 20 or 30 rounds of 5.56×45mm NATO ammunition. There are also 5-, 10-, 40- and 50-round box magazines, as well as 60- and 100-round casket magazines , 90-round snail-drum magazines , and 100-round drum magazines. The STANAG magazine, while relatively compact compared to other types of 5.56×45mm NATO box magazines, has often been criticized for

416-439: The 7.92×33mm Kurz StG 45(M) assault rifle , and later the commercially successful 7.62×51mm NATO G3 battle rifle and its 5.56×45mm NATO HK33 derivative. It is a selective fire automatic weapon that employs a roller-delayed blowback system of operation relying on geometrical transmission ratio relationships between parts. The two-piece bolt mechanism consists of a bolt head that contains two cylindrical locking rollers and

442-620: The G41TGS , or "Tactical Group Support" . Note: the 1:178mm (1:7 in) rifling was compatible with the European-standard SS109 round and the 1:305 mm (1:12 in) rifling was compatible with the US-standard M193 Ball round. Luigi Franchi Luigi Franchi S.p.A. ( Italian pronunciation: [luˈiːdʒi ˈfraŋki] ) is an Italian manufacturer of firearms , a division of Beretta Holding . Franchi products include

468-529: The 1.2 mm (0.05 in) thick sheet steel used by the HK33. The G41 also had a redesigned bolt assembly. It was designed around 5.56×45mm NATO ammunition with revised geometries between the bolt mechanism components to work with NATO STANAG magazines. It could also use older .223 Remington/5.56×45mm M193 ammunition. The reliable functioning of roller-delayed blowback mechanisms is limited by specific ammunition and arm parameters like bullet weight, propellant charge, barrel length and amount of wear. For obtaining

494-507: The aluminum feed ramp of the M4 carbine, increasing mean rounds between stoppage by 300%. Over the years different cartridges that fit into the STANAG magazine emerged, some rounds like .300 AAC Blackout have the same rim diameter as .223 Remington and only require a barrel change to be used in a firearms that was previously using in .223 Remington . Loading a STANAG magazine, particularly one with

520-468: The bolt carrier group goes into battery. The lever essentially ratchets into place with friction, providing enough resistance to being re-opened that the bolt carrier does not rebound. The spring-powered claw extractor is also contained inside the bolt while the lever ejector is located inside the trigger housing (actuated by the recoiling bolt). The G41 receiver is stamped from a smooth 1.0 mm (0.04 in) sheet of high-tensile steel rather than

546-427: The bolt head by the predetermined ratio. This ratio is continued until the locking rollers have been withdrawn from the barrel extension recesses. After the rollers retract entirely behind the bolt head, the locking recesses of the barrel extension are cleared, and all parts continue moving rearward together, opening the breech and actuating the extraction and feeding cycles. The chamber is opened under high pressure, thus

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572-404: The chamber received a series of flutes in order to increase extraction reliability and prevent sticking of the spent casing to the chamber walls. Like the G3 and HK33 bolts the G41 bolt features an anti-bounce mechanism that prevents the bolt from bouncing off the barrel's breech surface. The "bolt head locking lever" is a spring-loaded claw mounted on the bolt carrier that grabs the bolt head as

598-484: The military SPAS-12 and SPAS-15 and the sporting-type long-recoil action AL-48 . Franchi manufactures over and under, and semi-automatic shotguns . Franchi remained a family business since its founding until 1987, when it was acquired by the industrial conglomerate Socimi , based in Milan ; with the bankruptcy of Socimi in 1993, Franchi was acquired by Beretta Holding. This Italian corporation or company article

624-519: The trigger housing. In the "safe" position, the trigger and sear are disabled. The G41 uses NATO STANAG magazines (from the M16 rifle ) with a capacity of 30 rounds. The magazine release is located on the left side of the rifle, above the magazine well. The weapon incorporates a manual forward assist that can be used to positively close the bolt, similar to the one used on the American M16A1 rifle, and

650-479: The weight of the G41 exceeded the 3.65 kg (8.05 lb) weight of the preceding 60 mm (2.4 in) shorter barreled HK33A2, making the G41 relatively heavy compared to other 5.56×45mm NATO chambered assault rifles of its era. The cold hammer-forged barrel has a hexagonal polygonal bore. It comes rifled for either the NATO-standard, Belgian SS109 62 grain bullet with a twist of 178 mm (1:7 in) or in

676-436: Was proposed in order to allow NATO members to easily share rifle ammunition and magazines down to the individual soldier level. The U.S. M16 rifle 's magazine proportions were proposed for standardization. Many NATO members, but not all, subsequently developed or purchased rifles with the ability to accept this type of magazine. However, the standard was never ratified and remains a "Draft STANAG". The STANAG magazine concept

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