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  2. Lewis Machine & Tool Company - Wikipedia

    en.wikipedia.org/wiki/Lewis_Machine_&_Tool_Company

    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 ...

  3. M240 machine gun - Wikipedia

    en.wikipedia.org/wiki/M240_machine_gun

    Thus Barrett designed the 240LW and 240LWS, keeping the standard M240 technical data package, while more efficiently manufacturing the receiver. [26] In 2020, Geissele Automatics announced the acquisition of the technical data packages and intellectual property for the 240LW and 240LWS. [27]

  4. Close Quarters Battle Receiver - Wikipedia

    en.wikipedia.org/wiki/Close_Quarters_Battle_Receiver

    The Close Quarter Battle Receiver (CQBR) [5] is a replacement upper receiver for the M4A1 carbine developed by the US Navy.. The CQBR features a 10.3 in (262 mm) length barrel (similar to the Colt Commando short-barreled M16 variants of the past) which makes the weapon significantly more compact, thus making it easier to use in, and around, vehicles and in tight, confined spaces.

  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. IWI Tavor - Wikipedia

    en.wikipedia.org/wiki/IWI_Tavor

    A significant aftermarket of spare and replacement parts has developed around the Tavor rifle family, including the development of match grade accurizing triggers for the bullpup rifle that are produced by manufacturers such as Geissele Automatics and double stage trigger pack TAV-D from Shooting Sight. [33]

  7. Colt Canada C7 and C8 - Wikipedia

    en.wikipedia.org/wiki/Colt_Canada_C7_and_C8

    Diemaco offered a training version of the C7 named the C10, which would be a semi-automatic variant chambered in .22 Long Rifle ammunition. The polymer stock and lower receiver would be one piece. [citation needed] The C10 was proposed but never implemented, and no .22 caliber sub-cal system was used in the CAF after the withdrawal of the C1A1 ...

  8. Heckler & Koch HK417 - Wikipedia

    en.wikipedia.org/wiki/Heckler_&_Koch_HK417

    The Heckler & Koch HK417 is a battle rifle designed and manufactured by Heckler & Koch. [1]Being the larger caliber version of the Heckler & Koch HK416, and chambered for the 7.62×51mm NATO rifle cartridge, it is intended for use where the penetrative power, stopping power, and range of the 5.56×45mm NATO HK416 would otherwise be insufficient.

  9. M4 carbine - Wikipedia

    en.wikipedia.org/wiki/M4_carbine

    A Special Purpose Receiver built by NWSC Crane Division, mounted on an M16A1 lower receiver The SOPMOD program also introduced the Special Purpose Receiver (SPR), a 16-or-18 in (406-or-457 mm) barreled upper receiver that would be mated to an M4A1 lower receiver to allow the weapon to serve as a designated marksman rifle (DMR).