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At this point, the bureaucratic battle lines were well-defined, with the Army ordnance agencies opposed to the AR-15 and the Air Force and civilian leadership of the Defense Department in favor. [27] In January 1963, Secretary of Defense Robert McNamara concluded that the AR-15 was the superior weapon system and ordered a halt to M14 production ...
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.
A patented AR-15-pattern is produced with a bolt design featuring a redesigned extractor intended to improve the extraction of cartridges under adverse conditions. The company also produces a redesigned bolt carrier intended to improve the reliable performance of the rifle's “internal piston” system by obtaining a similar timing sequence with 14.5-inch carbine-length barrels compared to 20 ...
PSA also sources FN cold hammer forged barrels for the AR-15. PSA has now begun offering the AK-103, AK-104 and the AK-105, based on the modernized AK-100 family. Palmetto State Armory also produces a line of 1911 handguns, [ 5 ] AR-10 rifles, 9mm AR-style pistols [ 6 ] and various AR style rifled-uppers ranging in caliber and cartridge ...
Attaching the barrel to the receiver using a barrel nut and a barrel with a shoulder is an alternative to action threads, which has been used in firearms such as the Sten gun and AR-15. Hand tools Quick barrel change systems is an increasingly popular alternative, as seen in for example SIG Sauer 200 STR, Roessler Titan or Blaser R8.
The standard XM-15 has a forged 7075T6 aircraft-grade aluminum upper and lower receiver. Barrels of XM-15 firearms have a heavy profile and are hard chrome-lined 4150 alloy steel or 416 stainless steel. [2] [4] In Bushmaster's 2016 sales brochure, all new-production XM-15s are stated to be supplied with a 4150 steel barrel. [5]
Pistol grips can also serve multiple functions, such as a magazine housing (in semi-automatic pistols), bipod (in some foregrips) or tool storage device (for spare batteries, gun oil/cleaner, hex keys, etc.). In few firearms, like the Finnish Kk 62 light machine gun, the pistol grip is also used as a handle to charge the weapon.
It had a 16-inch barrel, 6-position collapsible stock and a stainless-steel 30-round magazine. However, few shooters wanted an expensive AR-15 clone in a non-standard caliber that needed special magazines. [11] As a result, the model was abandoned in 2011 due to poor sales. [12]