Dead Air Silencers Odessa-9 Piston Black . Designed for seamless compatibility this piston is available for 9mm barrels threaded in both 1/2-28 and Metric 13.5x1LH ensuring versatility across a range of firearms. Specifications for Dead Air Silencers Dead Air Odessa Piston: Manufacturer: Dead Air Silencers Color: Black Finish: Matte Threads per Inch: 1/2x28 Condition: New Features of Dead Air Silencers Dead Air Odessa Piston: Designed for use with the Odessa 9 silencer Compatible with all tilting-barrel handguns Available in 9mm barrel threads: 1/2-28 and Metric 13.5x1LH Ensures secure and reliable performance Package Contents: Dead Air Silencers Dead Air Odessa Piston