Now your choices are limitless! Get the full fun factor out of your Colt M4 / M16 and H&K 416 .22LR tactical rifle by mounting any 1/2-28 TPI end-of-barrel accessory such as a muzzle brake, flash suppressor, compensator, sound suppressor or any other legal thing you like. The Colt M4 / M16 Barrel Thread Converter (also known as a muzzle coupler or muzzle coupling) from Tacticool22 allows you to mount standard end-of-barrel accessories such as flash hiders, recoil