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  2. SOPMOD - Wikipedia

    en.wikipedia.org/wiki/SOPMOD

    The Special Operations Peculiar MODification (SOPMOD) kit is an accessory system for the M4A1 carbine, CQBR, FN SCAR Mk 16/17, HK416 and other weapons used by United States Special Operations Command (USSOCOM) special forces units, though it is not specific to SOCOM.

  3. Barrel threads - Wikipedia

    en.wikipedia.org/wiki/Barrel_threads

    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.

  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. M4 carbine - Wikipedia

    en.wikipedia.org/wiki/M4_carbine

    [b] [57] The M4 is a shorter and lighter variant of the M16A2 rifle, sharing much of the same operation mechanisms and has 80% parts commonality; the chief differences are a shorter barrel of 14.5 inches rather than 20 inches as well as a shortened receiver extension and buffer.

  6. M203 grenade launcher - Wikipedia

    en.wikipedia.org/wiki/M203_grenade_launcher

    The M203 unmodified to an A1/A2 series will not fit on the M4 carbine series. The U.S. M203A1 has a barrel of 12 inches, while the SOPMOD M203A1 has a 9 in (23 cm) barrel. The M203A1 is intended for use with the M4 and M4A1 carbines, and uses a special bracket mount consisting of three screws and lacing wire.

  7. New fast-moving fire emerges as death toll from raging LA ...

    www.aol.com/catastrophic-los-angeles-wildfires...

    Editor's Note: This page is a summary of news on the LA fires for Thursday, Jan. 9. For the latest updates on the Los Angeles wildfires in California, please read USA TODAY'S live updates for ...

  8. Rifling - Wikipedia

    en.wikipedia.org/wiki/Rifling

    Rifling of a 105 mm Royal Ordnance L7 tank gun Conventional rifling of a 90 mm M75 cannon (production year 1891, Austria-Hungary) Rifling in a GAU-8 autocannon. Rifling is the term for helical grooves machined into the internal surface of a firearms's barrel for imparting a spin to a projectile to improve its aerodynamic stability and accuracy.

  9. Lady Gaga's Engagement Ring Is Even Bigger Than We ... - AOL

    www.aol.com/lady-gagas-engagement-ring-even...

    Lady Gaga is showing off quite the sparkler on Carpool Karaoke!. The singer, 38, revealed her giant-sized engagement ring while appearing in Apple TV+ and Apple Music’s Christmas special of A ...