Banish 45 / 46 Piston - 5/8 x 24 - The BANISH 45 multi-caliber and modular suppressor can be used on a variety of host firearms with different barrel threads by quickly and easily swapping out the threaded piston in the rear of the silencer. BANISH pistons feature heat treated steel construction and engraving to identify the thread diameter, pitch, and direction of rotation for installation (Left Hand threads). BANISH Suppressors manufacture pistons to match the barrel threads of many popular factory threaded pistol barrels.