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  2. Patriot Ordnance Factory - Wikipedia

    en.wikipedia.org/wiki/Patriot_Ordnance_Factory

    [citation needed] Because hot gases are not injected into the upper receiver, carbon fouling in the action is virtually eliminated. POF-USA's solution to timing problems related to AR-15's with short gas tubes, POF-USA developed precise op-rod/piston geometry and regulated gas pressure to enable rifles and carbines to be properly timed and bolt ...

  3. Barrel threads - Wikipedia

    en.wikipedia.org/wiki/Barrel_threads

    For example, factory and aftermarket receivers using the Remington 700 footprint are produced with various types of action threads, all with a 26.99 mm (1 + 1 ⁄ 16 in) diameter, but with a pitch of either a 1.588 mm (16 TPI, Remington standard), 1.411 mm (18 TPI) or 1.270 mm (20 TPI, Savage standard).

  4. List of AR platform cartridges - Wikipedia

    en.wikipedia.org/wiki/List_of_AR_platform_cartridges

    375 Stalker, Standard military 7.62x51 cases (also .308), length is trimmed, shoulder is reformed, neck is expanded to .375 375 SOCOM, Proprietary. The case head and rim dimensions exactly match the military 7.62x51 (also .308), however, the case body is slightly wider and has more taper. 400 AR, Wildcat. The parent is the 7.35×51mm Carcano ...

  5. List of straight-pull rifles - Wikipedia

    en.wikipedia.org/wiki/List_of_straight-pull_rifles

    .308 Win: 2012-current United States: LMT LM223SP .223 Rem: 2012-current United States: Browning Maral .308 Win to 9.3×62mm: 2013-current [28] United States: Strasser RS14 .222 Rem to .375 Ruger: 2014-current Austria: Strasser RS SOLO .222 Rem to .375 Ruger: 2014-current Austria: Strasser TAC 1 6.5 Creedmoor to .300 Win Mag: 2014-current ...

  6. List of firearm brands - Wikipedia

    en.wikipedia.org/wiki/List_of_firearm_brands

    POF-USA Patriot Ordnance Factory, Inc. United States Civilian, law enforcement, military, security 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 ...

  7. List of 3D-printed weapons and parts - Wikipedia

    en.wikipedia.org/wiki/List_of_3D-printed_weapons...

    It fits under the rail of a Samson or similar rail system on the AR-15-type rifle, but can to perform acceptably on bolt action 7.62×51mm/.308 rifles as well), 762-AR10 Suppressor (designed for the AR-10/LAR-8 7.62mm/.308 rifle but will also work with any bolt-action rifle in .30 caliber or less) and 762-G3 Suppressor (designed for the Heckler ...

  8. Brügger & Thomet APR - Wikipedia

    en.wikipedia.org/wiki/Brügger_&_Thomet_APR

    At its chamber end, the barrel becomes screwed into the receiver and presses into the upper receiver's locking ring. For the .308 Winchester chambering, the 280 mm (1:11 in) right-hand rifling twist rate with four grooves was selected over the 305 mm (1:12 in) twist traditionally used with .308 Winchester ammunition, as a compromise when ...

  9. List of military headstamps - Wikipedia

    en.wikipedia.org/wiki/List_of_military_headstamps

    NOTE: The manufacturer and last two digits of the year are on the upper arc of the stamp (e.g., WA 80 for Walter Annexe, 1980). The symbols on the lower arc of the stamp indicates the caliber ( 7.7mm , 5.56mm or 7.62mm ) and R# or R#M# indicate the model (R) and mark (M) of the cartridge, like the Commonwealth L#A# stamp (e.g., R1M1 is the ...