Angstadt Arms Muzzle Brake, 3 Lug, 9MM, 1/2x28 Threads, 1.42 Length, Nitride Finish, Black AA093LDC28 This tri-lug muzzle brake gives you the ability to quickly attach a sound suppressor without sacrificing flash mitigation and recoil management when shooting unsuppressed. Featuring a universal 3-lug interface" this 3-lug muzzle brake can quickly interface with any pistol caliber sound suppressor as well as the Angstadt Arms 3-Lug QD Blast Shield