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The 5.56×45mm NATO standard SS109/M855 cartridge was designed for maximum performance when fired from a 508 mm (20.0 in) long barrel, as was the original 5.56 mm M193 cartridge. Experiments with longer length barrels up to 610 mm (24.0 in) resulted in no improvement or a decrease in muzzle velocities for the SS109/M855 cartridge.
The Haenel MK 556 [2] (German: Maschinenkarabiner) [3] is a gas-operated selective-fire 5.56×45mm NATO assault rifle designed by German company C.G. Haenel.The MK556 was finalised in September 2020, and it is a fully automatic version of an earlier Haenel design, the CR 223, which was already in limited use by law enforcement agencies since 2017. [4]
Assault rifle China 1980s-present Unlicensed copy of the M16 rifle. QBZ-97: Bullpup assault rifle China 1997–present 5.56×45mm NATO variant of QBZ-95. Norinco AK-2000: Assault rifle China 2000s-present Copy of the AK-101. QBZ-03: Assault rifle China 2003–present Export variant is chambered in 5.56×45mm NATO. QBU-97A: Semi-automatic ...
The Ruger AR-556 is a semiautomatic AR-15 style rifle manufactured by U.S. firearms company Sturm, Ruger & Co. Introduced in 2014 as an entry-level AR-15 using a direct impingement action, with variants since being released such as the upgraded AR-556 MPR (multi-purpose rifle) in 2017 [1] and the AR-556 pistol in 2019.
The Ares Defense Shrike 5.56 is an air-cooled, dual-feed rifle for semi or full-auto configurations that fires the 5.56×45mm NATO cartridge. The Shrike 5.56 can be supplied as a complete weapon, or as an upper receiver “performance upgrade kit” to existing M16-type service rifles and carbines. it is named after the Shrike, a carnivorous passerine bird, and was designed by Geoffrey Herring.
The CETME Model L is a Spanish 5.56×45mm NATO assault rifle developed in the late 1970s at the state-owned small arms research and development establishment CETME (Centro de Estudios Técnicos de Materiales Especiales) located in Madrid. The rifle retains many of the proven design elements the institute had used previously in its CETME Model ...
The original M16 rifle was a 5.56×45mm automatic rifle with a 20-round magazine. In 1964, the XM16E1 entered US military service as the M16 and in the following year was deployed for jungle warfare operations during the Vietnam War. [19] In 1969, the M16A1 replaced the M14 rifle to become the US military's standard service rifle. [20]
The FN F2000 is a 5.56×45mm NATO bullpup rifle, designed by FN Herstal in Belgium. [5] Its compact bullpup design includes a telescopic sight, a non-adjustable fixed notch and front blade secondary sight. The weapon has fully ambidextrous controls, allowed by a unique ejection system, ejecting spent cartridge casings forward and to the right ...