These compensators are specifically designed for the XD/XDm witht the factory threaded barrels to work with factory ammunition and a reduced power recoil spring. Made from USA sourced aluminum and anodized for a light weight, long lasting compensator to tame muzzle flip and soften recoil. 1/2 x 28 tpi requires .4" to .5" of threads for 9mm. 1.026oz
When installed correctly, there will be a 1/4" gap between compensator and the slide.