ROSCO PUREBRED BBL 6MM ARC 20" STS

Rosco Manufacturing Purebred Barrel, SPR Profile, 6MM ARC, 20" Threaded Barrel, 5/8X24 Thread Pitch, 1:7.5 Barrel Twist, 416R, Rifle +1-Length Gas System, Fits AR15, Bead Blasted Finish, Silver PB-20-SPR-6MM-7.5-R1

This Rosco 20 6MM ARC Barrel was designed to improve the performance of the 6mm ARC. The SPR contour is ideal for cold bore shots on target and also helps maintain a good balance of weight. Gas ports were sized based on popular precision bullet weights and suppressor use.