The Revolution 9 and 45 silencers were first to market with the modular length feature concept. The removable booster extension allows the user to configure the length of the suppressor to fit their needs. The silencer is user serviceable ensuring long, high performance service life. The front caps can be interchanged for a smaller 22 caliber front cap, available separately. 17-4 stainless heat treated baffles, with anti-rotation RTZ (Return To Zero) Geometry features, ensure maximum strength and sound performance.