4.5" AR15 .300 BLK Barrel AR15 .300-BLK Barrel AR15-Barrel .300 Blackout

The AR-15 Barrel is a 4.5" heavy profile barrel made of 4150 chrome moly vanadium steel with a parkerized finish, a micro length gas system with a 1:8 twist rate. The barrel is chambered in .300 blackout and machined with .300 blackout feed ramps in the barrel extension.