CMMG Mk45G Guard PDW SBR .45 ACP 8 Inch Threaded Barrel (.578-28 TPI) Salt Bath Nitride Finish RKM7 Handguard MOE Pistol Grip Magpul MOE Adjustable Stock Glock 21 Magazine Compatible 13 Round - All NFA Rules Apply

Chambered in .45 ACP and fed by Glock 21 magazines. Radial Delayed Blowback operating system with dual-pinned fully machined bolt catch linkage with last round hold-open. Threaded to accept most common .45ACP suppressors with .578-28 tpi. Eight inch medium taper 4140 barrel with salt bath nitride finish and 1:16 inch twist rate; SV muzzle brake. CMMG RKM7 handguard. Lower receiver machined from billet 7075-T6 aluminum; forged 7075-T6 aluminum upper. CMMG single stage mil-spec style trigger. Oversized trigger guard and flared magwell. Magpul pistol grip; Moapul MOE stock with six-position mil-spec receiver extension. Includes 13 round magazine. All NFA rules apply.