CMMG 30D120A Barrel Sub-Assembly 300 Blackout 16.10″ Black Nitride Finish 4140 Chromoly Steel Material Carbine Length with Medium Taper Profile for AR-15
CMMG 30D810A Barrel Sub-Assembly 300 Blackout 8″ Black Nitride Finish 4140 Chromoly Steel Material Pistol Length with Medium Taper Profile for AR-15
CMMG 57D0476 Replacement Barrel Kit with Bolt Carrier Group, 5.7x28mm 16.10″ Threaded, Black, Radial Delayed Blowback, Fits AR-Platform