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On December 8, 2010, Adcor announced production of the A-556 rifle to the civilian market. On June 27, 2011, it was announced that the improved A-556 Elite variant would be available for sale to the public. In June 2012, a soldier was seen in Afghanistan with a A-556 upper receiver with a 10.5 inch barrel on an M4 lower receiver. [4]
Government-specified barrel profile increased to between 0.675 and 0.575 inches; A2: Also referred to as the "government" or "gov't" profile. Barrel profile for which the portion of the barrel in front of handguards is thickened to 0.715 inches; HBAR: A barrel that in some portion is thicker than government-profile, usually underneath the ...
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 IWI US Zion-15 is an AR-15–style rifle assembled in Middletown, Dauphin County, Pennsylvania by IWI US, originally released in 2020.Marketed at a competitively low price, it is considered to be a budget or entry level rifle designed for American consumers optimized for home defense or competition, chambered in 5.56 NATO.
The rifle is available with four barrel lengths and can be easily converted from a standard rifle (with a 16.5 inch barrel) into a carbine (with a 14.5 inch barrel), into a compact rifle (with a 10.5 inch barrel), or into a designated marksman rifle (with an 18-inch barrel) without any tools. Barrel lengths of the two calibres are exactly the same.
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 Armada is a select-fire rifle composed of two receivers (upper and lower) manufactured in forged aluminum, uses a 22 in (560 mm) barrel with a 1:9 right-hand twist (able to stabilize both M193 "Ball" and SS109/M855 variants of the 5.56mm cartridge), Norinco CQ-style plastic parts (grip, stock, handguard), flip-up rear sight adjustable for ...
Barrel manufacturers include X-Caliber, McGowen, AR Precision, and PAC-NOR. By the end of April 2016, more than 1,000 .277 Wolverine barrels had been sold, with more than 2,000 by mid-November 2017. [ citation needed ] Barrels lengths include: 8.2, 10.5, 12.5, and 14.5 inch pistol; 16, 18, and 20 inch rifle.