Gemtech

Gemtech 5.56mm Muzzle Brake (1/2-28) Caliber - 5.56 Sound Reduction Diameter Length - 2.4" Weight Mount Material Full Auto Rated Finish Quickmount lugs for use with all 5.56mm and 7.62mm suppressors Blank Firing Adapter (BFA) groove for use with GM/GMT-HALO and training devices Extended portion behind lugs for use on shorter barrels Precision mounting shim kit included All 5.56mm QUICKMOUNTS fit the M4-96D, G5, G5-T, SHIELD, HVT-QM, QUICKSAND and ONE suppressors.