Dead Air Silencers Mojave Piston .578x28 .45 Cal Black. This piston is designed to work as part of your PB500 Booster Assembly (which ships with the Mojave 9 and Mojave 45 silencers) and internal booster spring for use on any tilting-barrel Handguns. Specifications for Dead Air Silencers Mojave Piston: Manufacturer: Dead Air Silencers Color: Black Features of Dead Air Silencers Dead Air Mojave Piston: Compatible with Mojave 9 and Mojave 45 suppressors Designed for tilting-barrel handguns Works with PB500 Booster Assembly and booster spring Caliber: .45 Thread pattern: M16x1 right-hand Package Contents: Dead Air Silencers Mojave Piston Dead Air Silencers PB444: Mojave Piston .578x28 .45 Cal Black