The BANISH 9 suppressor is compatible with various host firearms that have different barrel threads, thanks to a quick and simple swap of the threaded piston at the rear of the silencer. BANISH Suppressors manufactures pistons designed to fit the barrel threads of many popular factory-threaded pistol barrels. These pistons are made from heat-treated steel and include engraving to indicate the thread diameter, pitch, and rotation direction for installation (Left Hand threads).