.300 BLK

AR-15 .300 AAC. Blackout 10" Barrel 1:8 Twist Pistol Gas System - Black Nitride

AR-15 .300 blackout 16" inch rifle barrel 1:8 - black nitride

AR-15 .300 Blackout 8.5" Inch Barrel 1:8 - Nitride

AR .300 Blackout 7.5" Heavy Profile Barrel 1:8 - Black Phosphate

AR-15 .300 Blackout 7.5" Inch Pistol Barrel 1:8 -Stainless Steel