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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]
The AR-15 was found to be three times more reliable than the M14 rifle. [3] However, General Maxwell Taylor, then Army Chief of Staff, "vetoed" the AR-15 in favor of the M14. [3] In 1959, ArmaLite—now frustrated with the lack of results and suffering ongoing financial difficulties—sold its rights to the AR-10 and AR-15 to Colt. [1]
1:12 Yes A1 R6002 AR-15 Sporter (SP1; Bundled with 3× scope) A1 Triangular S-1 A1 No No .223 REM 20 in. A1 1:12 Yes A1 R6003 AR-15 Sporter Carbine (SP1 Carbine; Bundled with 3× scope) 2nd Generation Short Ribbed S-1 A1 No No .223 REM 16 in. A1 1:12 Yes A1 R6004 AR-15 Sporter (SP1; Bundled with Colt Reflex Sighting System) A1 Triangular S-1 A1 No
The Compliant model (designed for the California market) has a CAR-15 stock fixed in the open position (with an overall length of 33.75 inches) and comes with 10-round magazines. [ 14 ] The Smith & Wesson Performance Center target shooting version has an 18-inch bull barrel threaded to take any AR-15/M16-style compensator, a free-floated forend ...
Stripped AR-10 (Portuguese model) Close-up of stripped AR-10 barrel and gas tube (Portuguese model) The AR-10 is a lightweight, air-cooled, magazine-fed, gas-operated rifle that uses a piston within the bolt carrier with a rotary bolt locking mechanism.
[17] [18] A lighter weight selective fire variant of the AR-10 was designed in 1958 for military use and designated the ArmaLite model 15, or AR-15. [ 19 ] [ 16 ] Due to financial problems and limitations in terms of manpower and production capacity, ArmaLite sold the AR-15 and AR-10 designs and trademarks to Colt in 1959.
The M16 internal piston action was derived from the original ArmaLite AR-10 and ArmaLite AR-15 actions. ... barrel length reduces ... inch barrel and 1:12 ...
The AR-15 uses an L-type flip, aperture rear sight and it is adjustable with two settings, 0 to 300 meters and 300 to 400 meters. [16] The front sight is a post adjustable for elevation. The rear sight can be adjusted for windage. The sights can be adjusted with a bullet tip or pointed tool. The AR-15 can also mount a scope on the carrying handle.