Jk Armament JK155SBRX30 155 SBRX 30 Cal Short Barrel Rifle High Flow
JK 155 SBRX is machined from 17-4 stainless steel and grade 5 titanium. Designed for hard use on short barrels. It is also full-auto rated. JK 155 SBRX sounds great on 5.56 and rated for up to 300 Win Mag.