Rosco Manufacturing BL-16-HB-300BLK-8-P Bloodline 5.56 NATO 300 Blackout 16″ Nitride 4150 CMV Barrel

The Rosco 300 Blackout barrels were created by using input from SOCOM end users and some of the original creators of the 300 Blackout caliber. Every barrel was designed to optimize the original role for this caliber; to be suppressor friendly and accurate. Twist rates, gas port diameters, and lengths have all been taken into account when we set out to make these.