Banish Piston .45 ACP For 45 Silver M16X1 LH Thread Pitch. BANISH Suppressors manufactures pistons to match the barrel threads of many popular factory-threaded pistol barrels. BANISH pistons feature heat-treated steel construction and engraving to identify the thread diameter pitch and rotation direction for installation (Left Hand threads). Specifications for Banish Piston .45 ACP For 45 Silver M16X1 LH Thread Pitch: Manufacturer: Banish Caliber: .45 ACP Color: Silver Threads per Inch: M16x1 LH Additional Features: BANISH 45 Piston Handle Color: Silver Features of Banish Piston .45 ACP For 45 Silver M16X1 LH Thread Pitch: Heat Treated Steel Construction Package Contents: Banish Piston .45 ACP For 45 Silver M16X1 LH Thread Pitch