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Rifles styled like the AR-15 come in many sizes and have many options, depending on the manufacturer. The lower receiver, without the receiver extension, rear takedown pin, and buttstock, is shown at bottom. An AR-15–style rifle is a lightweight semi-automatic rifle based on or similar to the Colt AR-15 design.
The AR-15 rifle usually comes chambered for either the military cartridge 5.56×45mm or the .223 Remington. Because of the pressures associated with the 5.56×45mm, it is not advisable to fire 5.56×45mm rounds in an AR-15 marked as .223 Remington, since this can result in damage to the rifle or injury to the shooter. [ 1 ]
Locking lug feed ramp on AR-15 barrel nut. A feed ramp is a basic feature of many breech loading cartridge firearm designs. It is a tightly machined and polished piece of metal which guides a cartridge from the top of the magazine into the firing chamber of the barrel.
The forward assist is a button found on firearms with non-reciprocating (i.e. not attached to the bolt/bolt carrier) cocking handles, commonly on AR-15 rifle derivatives, such as the M16 rifle, and is usually located on the receiver near the bolt closure. [1]
In the past decade, firearms manufacturers have made about $1 billion from the sale of AR-15 style weapons. 4. Millions of AR-15 style rifles in the U.S. According to the National Shooting Sports ...
The 6.5mm Grendel is an intermediate cartridge jointly designed by British-American armorer Bill Alexander, competitive shooter Arne Brennan (of Houston, Texas) and Lapua ballistician Janne Pohjoispää, as a low-recoil, high-precision rifle cartridge specifically for the AR-15 platform at medium/long range (200–800 yard).
Originally intended for military use, AR-15-style rifles have surged in popularity over the last two decades Roughly 1 in 20 Americans own an AR-15 rifle as firearm’s popularity explodes despite ...
The AR-15 was first developed in the 1950s by gunmaker ArmaLite, from which the "AR" in the name originates. It was a slow seller for its first decades of existence. Gunmaker Colt bought the ...