CMMG, Inc 9mm Barrel and Bolt Carrier Group KitOur MkG GUARD Barrel and BCG Kit allow you to build a Pistol Caliber Carbine using our Patent Pending Radial Delayed Blowback System. Unlike typical...
Barrel and Bolt Group Kit, 22LR, 16\\" CM, M4, SS Bolt Group Caliber: .22LR Sporting Chamber Barrel: 16\\" M4 Profile Barrel, WASP Treated 4140 Chrome-Moly Steel, 1:16\\" Twist