suppressedLightly used Rearden SPB (single port brake) muzzle device in great shape. Threads are 1/2x28 and is for 5.56. Has a few hundred rounds but not enough for any crazy buildup. Was perfectly concentric when mounted with suppressor and no signs of gas leakage at the seal. Price is $50 shipped and includes the Surefire washers I used when centering for easy install (not pictured).
