Rosco Bloodline 300 Blackout Barrel

The Rosco Bloodline 300 Blackout Barrel was designed in three different lengths, 8.2″, 10.5″ and 16″. Rosco’s 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. It is Rosco’s goal to get you the performance that you seek out of these AR-15 barrels when running sub-sonic ammo or supersonic ammo (depending on barrel length). Twist rate, gas port diameters, and lengths have all been taken into account when set out to make these barrels.