The Gemtech Lunar 9 suppressor features an innovative baffle design that allows it to be converted from a longer, 7" suppressor to a shorter 4.7" suppressor with a weight of 10 oz for the longer and 7 oz for the shorter, while still being hearing-safe. The new GEMTECH Lunar 9 suppressor is compatible with a variety of threaded barrel pistols, carbines, and rifles chambered for 9mm and subsonic 300 BLK that are currently on the market. FeaturesFull Auto Rated3" Minimum Barrel for 9mm