Product Description For use with the Oceania Defense 556 Ratchet Lock Muzzle Brake. DOes not come with shim set.

NOTE" This can be used in a 7,65 suppressor on a 556 rifle.

556 1/2x28 Ratchet Lock Muzzle Brake Works with Ratchet Lock Suppressor for 7.62 and smaller. Made from 15-5 Precipitation Hardened stainless steel. This brake will reduce recoil when used on its own or will reduce baffle wear when used inside a suppressor. Works with both titanium and inconell suppressors. PVD coated Black.