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As of 2013, the standard model Ruger Gunsite Scout rifle with the 16.5 inch barrel and flash hider and the Matte Stainless is now available for sale in Australia, Canada and other countries. In addition, a model chambered in 5.56×45mm NATO was announced in 2014. [6]
A 5.56 NATO round fired from a 20 in (510 mm) barrel has a flatter trajectory than a 7.62 NATO round fired from a barrel of equal length, while the 5.56 NATO fired from a 14.5 in (370 mm) barrel has the same trajectory as the 7.62 NATO from a 20 in barrel, as well as the same time of flight.
The table below gives a list of firearms that can fire the 5.56×45mm NATO cartridge, first developed and used in the late 1970s for the M16 rifle, which to date, is the most widely produced weapon in this caliber. [1] Not all countries that use weapons chambered in this caliber are in NATO. This table is sortable for every column.
The rest of the barrel was maintained at the original thickness to enable the M203 grenade launcher to be attached. The barrel rifling was revised to a faster 1:7 (178 mm) twist rate to adequately stabilize the new 5.56×45mm NATO SS109/M855 ball and L110/M856 tracer ammunition.
5.56 NATO 16 in. A1 1:7 Yes A2 R6521 Colt Carbine (AR-15A2 Government Carbine) (Special export model with receiver block and large pin upper receiver) 3rd Generation Short Ribbed S-1 A2 Yes Yes 5.56 NATO 16 in. A1 1:7 Yes/No A2 R6530 Sporter Lightweight .223 3rd Generation Short Ribbed S-1 A2 Yes Yes 5.56 NATO 16 in. A1 1:7 No A2 R6550
All SIG516 models except the Marksman are equipped with 16-inch (406 mm) barrels shrouded by a free-floating M1913 Picatinny rail, as well as flip-up iron sights made by SIG Sauer. [4] The 5.56×45mm NATO SIG516 models accept STANAG box magazines. These magazines are constructed in 5-, 10-, 20-, and 30-round variants.
The Kel-Tec PLR-16 is a gas-operated, semi-automatic pistol version of the SU-16, chambered in 5.56 NATO, manufactured by Kel-Tec Industries of Florida. The PLR ( Pistol, Long Range ) was designed for recreational target shooting, and small game , varmint , or predator hunting. [ 2 ]
The IWI Carmel is a short-stroke, gas-piston operated rifle chambered in 5.56x45mm, similar to the CZ BREN 2 and the FN SCAR-L.The free-floating barrel is chrome lined and cold hammer-forged, with a 1:7 twist rate and available in a variety of barrel lengths: 10.5", 12", 14.5" and 16".