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  2. List of Colt AR-15 and M16 rifle variants - Wikipedia

    en.wikipedia.org/wiki/List_of_Colt_AR-15_and_M16...

    List of Colt AR-15 and M16 rifle variants. 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.

  3. List of AR platform cartridges - Wikipedia

    en.wikipedia.org/wiki/List_of_AR_platform_cartridges

    22 Grendel (wildcat) aka 224 Grendel. .22 Nosler. .22 PPC. .22 ARC. .222 Remington (sometimes chambered in countries where ownership of military cartridges is illegal) .223 Remington – Original AR-15 cartridge: .223 cartridges may function in a 5.56×45mm rifle, however 5.56×45mm cartridges may produce excessive pressure in a .223 Rem rifle.

  4. Colt AR-15 - Wikipedia

    en.wikipedia.org/wiki/Colt_AR-15

    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.

  5. Receiver (firearms) - Wikipedia

    en.wikipedia.org/wiki/Receiver_(firearms)

    A disassembled Mauser action showing a partially disassembled receiver and bolt. In firearms terminology and at 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 ...

  6. AR-15–style rifle - Wikipedia

    en.wikipedia.org/wiki/AR-15–style_rifle

    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 Colt model removed the selective fire feature of its predecessor, the original ArmaLite AR-15, which is a scaled-down derivative ...

  7. AR-57 - Wikipedia

    en.wikipedia.org/wiki/AR-57

    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] The magazines mount horizontally on top of the front handguard, with brass ejecting through ...

  8. Ares Shrike 5.56 - Wikipedia

    en.wikipedia.org/wiki/Ares_Shrike_5.56

    The Ares Defense Shrike 5.56 is an air-cooled, dual-feed rifle for semi or full-auto configurations that fires the 5.56×45mm NATO cartridge. The Shrike 5.56 can be supplied as a complete weapon, or as an upper receiver “performance upgrade kit” to existing M16-type service rifles and carbines. it is named after the Shrike, a carnivorous passerine bird, and was designed by Geoffrey Herring.

  9. ArmaLite AR-18 - Wikipedia

    en.wikipedia.org/wiki/ArmaLite_AR-18

    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. Early British SA80 prototypes featured ArmaLite produced AR-18 upper receivers mated to a prototype stamped metal bullpup lower receiver. [37]