AR-15 Upper Parts

Proof Research 18" .223 Wylde Carbon Fiber 1:8 Rifle AR-15 Barrel PROOF has designed their AR barrels with the goal of improving performance and reliability in the AR platform. Our Caliber Matched Gas System (CAMGAS) results in a gas system that is...

Centurion Arms MK12 18" 5.56 NATO 1:7 416R Stainless Steel Rifle Length Barrel These are Crane Spec. MK12 barrels. These barrels are the result of tens of thousands of dollars in development done by the U.S. government to give our Special Operations guys...

Centurion Arms MK12 18" 5.56 NATO 1:7 R5 416R Stainless Steel Rifle Length Barrel Centurion Arms MK12 Rifle Barrels are the result of development done by the U.S. government to give Special Operations forces the best possible weapon system. Troops who...

Proof Research 18" 6.5 Grendel Carbon Fiber 1:8 Rifle .750 AR-15 Barrel PROOF has designed their AR barrels with the goal of improving performance and reliability in the AR platform. Our Caliber Matched Gas System (CAMGAS) results in a gas system that...

Proof Research 18" 6MM ARC Carbon Fiber 1:7.5 Rifle+1 AR-15 Barrel Proof Research Barrel's are a high quality barrels which are made to extremely high quality standards. The design and manufacturing processes which are used are state of the art and go...