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The 6.8mm Remington Special Purpose Cartridge (6.8 SPC, 6.8 SPC II or 6.8×43mm) is a rimless bottlenecked intermediate rifle cartridge that was developed by Remington Arms in collaboration with members of the U.S. Army Marksmanship Unit and United States Special Operations Command [6] to possibly replace the 5.56 NATO cartridge in short barreled rifles (SBR) and carbines.
The Remington ACR is a selective-fire modular rifle that is only available for the military and law enforcement market in 5.56×45mm NATO, 6.8mm Remington SPC, and 6.5mm Grendel. ACR – 14.5 in (368mm) barrel, 16.5 in (419mm) barrel [36] ACR-PDW – 8.25 in (210mm) barrel, 10.5 in (267mm) barrel [37]
The rebated rim dimensions exactly match the 6.8mm Remington SPC case, allowing the use of the 6.8mm SPC bolt-face of an AR-15, but the case has a base diameter of .4400" and cannot be reformed from any other existing case. The 400 LGND uses .4005" jacketed rifle bullets. 450 Bushmaster, Uses .284 Winchester cases. Cut the length to 1.700" to ...
Iron sights or various optics. The Bushmaster M4[2] or M4A3[3] is a semi-automatic or select-fire carbine size assault rifle manufactured by Bushmaster Firearms International, modeled on the AR-15. It is one of the Bushmaster XM15 line of rifles and carbines. [4]
The designation of M468 stands for an M4 carbine chambered for the 6.8mm SPC cartridge. It was an attempt to create an optimal Special Operations close-to-medium range carbine for Close Quarter Battle (CQB). A 12-inch barreled micro-carbine and 16-inch barreled carbine version were created. Barrett ceased manufacturing the rifle in 2010.
History and variants. The XCR was designed in 2004 by Alex J. Robinson of Robinson Armament Co. Production of the XCR-L variant of the rifle began in mid-2006. The XCR-L is currently available in 5.56×45mm NATO, 6.8mm Remington SPC and 7.62×39mm calibers. [9] Each of these calibers is available in kit form for converting an existing rifle to ...
Bushmaster XM-15. The Bushmaster XM-15 series (or XM15[3]) is a line of AR-15 style semi-automatic rifles and carbines manufactured by Bushmaster Firearms International, LLC. [2] Variants include the Bushmaster M4-type Carbine, Patrolman series, QRC series, Bushmaster XM15-E2S, and the Carbon 15 line. [2][5]
LWRC M6. LWRC M6A2 in a short barrel configuration with a cerakote "flat dark earth" finish, suppressor and holographic sight. The M6 is a series of carbines designed and manufactured by LWRC International. It is based on the M4 carbine, with which it shares 80% of its parts. [2] The 'M' model name is not a US military designation.