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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.
A worker at Lake City Army Ammunition Plant packs two cans of newly manufactured 5.56×45mm NATO ammunition into a wirebound crate. (c. 1998) Headstamp of a .50 caliber cartridge casing made at the Lake City Army Ammunition Plant in 1943 and recovered from the Sahuarita Bombing and Gunnery Range in 2012.
Walmart has announced it is returning guns and ammo to sales floors in all of its United States locations, backtracking on a decision earlier this week requiring they be stored in a secure room ...
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]
On 24 June 2010, the United States Army announced it began shipping its new 5.56 mm cartridge, the M855A1 Enhanced Performance Round (EPR), to active combat zones. During testing, the M855A1 performed better than M80 7.62×51mm NATO ball ammunition against certain types of targets (particularly hardened steel). However, this was due to the ...
The SIG 556 is designed to meet these requirements. The 556 lacks full-auto capability and the overall length is 940 mm (37.0 in). One difference is a new aluminum lower receiver that accepts M16 STANAG magazines and an M4 telescoping buttstock. The barrel's twist rate is 178 mm (1:7 in). [15] There are many variants of this rifle offered for sale.
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Many of these external-propellant caseless cartridges are also telescoped, with the bulk of the bullet held within the body of the cartridge, to cut down on cartridge length. A shorter cartridge cuts down on the distance the firearm's action must reciprocate to load a new round, which allows for higher cyclic rates and greater probability of ...