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The Ares Defense Shrike 5.56 is an air-cooled, dual-feed light machine gun/rifle for semi or full-auto configurations that fires the 5.56×45mm NATO cartridge. The Shrike 5.56 is sold as either as a complete weapon, or as an upper receiver "performance upgrade kit" to existing AR-15 and M16-type service rifles and carbines.
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 ...
The resulting COAL of 2.300" is only 1.02 mm longer than the maximum COAL for chambering a cartridge in the smaller AR-15; however, the 45 Raptor chamber pressure is allowed to be as high as 62,000 PSI. This means that the stronger AR-10 receiver and bolt carrier group is needed for shooting this cartridge.
ArmaLite AR-15 with the charging handle located on top of the upper receiver, protected within the carrying handle and a 25-round magazine. 1973 Colt AR-15 SP1 rifle with "slab side" lower receiver (lacking raised boss around magazine release button) and original Colt 20-round magazine.
In some cases, designs borrow more than just the AR-18's gas system. Successive rifle designs borrow other components such as the bolt carrier group or upper receiver. The HOWA Type 89 is an AR-18, modernized to fit the needs of the Japan Self-Defense Forces. The Singapore SAR-88 and Taiwanese T-91 utilize a complete AR-18 upper receiver.
The AR-57 PDW upper is a new design on AR-15/M16 rifles, blending the AR-15/M16 lower with a lightweight, monolithic upper receiver system chambered in 5.7×28mm. This model is also sold as a complete rifle, supplied with two 50-round P90 magazines. [1]
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Gas-piston-operated weapon systems, firearm accessories, drop-in triggers, patriotic artwork, bolt carriers, bolts, upper receivers, barrel nut heatsinks, E^2 (E-Squared) barrels Perazzi: Czechoslovak Group: Italy Civilian PGM Précision: PGM Précision France Civilian, law enforcement, military Pindad: Indonesian state-owned defense ...