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Barrel nut 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.
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 ...
On firearms where the cocking handle is permanently connected to the bolt/bolt carrier, a forward assist device is not necessary as the bolt can be assisted forwards by simply pushing or tapping the cocking handle forwards. [1] [5] The forward assist is generally not necessary as a standard procedure on any firearm. An exception is the British ...
A disassembled Mauser action showing a partially disassembled receiver and bolt. In firearms terminology and law, the firearm frame or receiver is the part of a firearm which integrates other components by providing housing for internal action components such as the hammer, bolt or breechblock, firing pin and extractor, and has threaded interfaces for externally attaching ("receiving ...
Barrel nut with M6 thread. A barrel nut (also known as steel cross dowel or dowel nut) is a specialized forged nut, and is commonly used in aerospace and ready-to-assemble furniture applications. It is used to bolt thin sheet metal parts to larger, often billet or forged, parts. The barrel nut is a round slug, or formed sheet metal part with ...
The Colt AR-15 is a product line of magazine-fed, gas-operated, autoloading rifle manufactured by Colt's Manufacturing Company ("Colt") in many configurations. [1] The rifle is a derivative of its predecessor, the lightweight ArmaLite AR-15, an automatic rifle designed by Eugene Stoner and other engineers at ArmaLite in 1956.
A one-piece wrench with a U-shaped opening that grips two opposite faces of the bolt or nut. This wrench is often double-ended, with a different-sized opening at each end. The ends are generally oriented at an angle of around 15 degrees to the axis of the handle; it allows a greater range of movement in enclosed spaces by flipping the wrench ...
Barrel nut: A firearm component used on barrels. On handguards, a barrel nut may refer to the component that holds the handguards to the barrel. On machine guns, a barrel nut is a screw on component at the rear of the barrel that has locking lugs and a notch for quick barrel change and helps install it in the trunnion.