6315KM-L is compatible with Dead Air 5.56mm sound suppressors. Its 3 and 9 o’clock ports are 25% smaller (shorter and narrower) than the other three upward facing ports so more gas is vented through the upward facing ports, it is a superior compensator to the A2, its flash suppression is equal to that of an A2. Threaded for 1/2×28, precision machined from solid 4140 steel bar stock, heat treated and QPQ coated, it is probably the finest A2 style comp/flash suppressor ever produced. The flash, noise and concussion they produce are the result and byproduct of reducing the felt recoil (brakes) and keeping the muzzle down (comps).
We went through a phase of expensive and fancy brakes and comps, all of them have worked well but we know they’re not practical for defense/duty ARs. Best keymo muzzle brake WebDRAGON DEAD AIR KEYMO WOLFMAN MUZZLE BRAKE 9x19MM LANTAC USA DRAGON DEAD AIR KEYMO WOLFMAN MUZZLE BRAKE 9x19MM 163.99. It is inexpensive, and does a decent job of what’s asked of it. We are a big fan of the A2 flash suppressor / compensator (compensator is the Army TM 9-1005-319-23&P, Air Force TO 11W3-5-5-42, Navy SW370-BU-MMI-010 designation).