Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly head spaced.
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$173.00 CMMG BBL 300BLK 16.1″ MR 4140CM SBN Total in Stock: 1 Total in Stock: 1 815835011028 CMMG 30DF80A .300 AAC Blackout Carbine Length Multi Role Profile 16.10" Nitride Barrel Sub-Assembly 1:7" Rifle Black 16.1" Carbine Rifle Barrels
CMMG BBL 300BLK 16.1″ MR 4140CM SBN
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