The SurgeX is built to provide the best of both worlds. The short configuration is optimized for reduced gas blowback and sound performance while the long configuration provides maximum suppression. With universal threads (1.375x24) the SurgeX is compatible with any of your favorite industry-standard mounts and includes our R.U.M. for use with our quick detach Dual Taper Locking System. - FEATURES - Rugged Universal Mount R.U.M. - The SurgeX is threaded in 1.375x24 and comes standard with our Rugged Univseral Mount. Making it compatible with Rugged's Dual Taper Locking SystemTM mounts and industry-standard mounts. - Accuracy Proven & Belt Fed Rated - The SurgeX provides a repeatable minimal zero shift without degrading the accuracy of your rifle and can take a beating. Don't choose between accuracy and durability when you can have both. - ADAPT Modular Technology - Now you don't have to choose between a compact suppressor and a full size one. With our ADAPT Modules you get two lengths with one tax stamp. So you can have a shorter and lighter suppressor in seconds compared to months. - SPECIFICATIONS - CALIBER: 7.62mm rated to .300 RUM; Belt Fed Rated