This suppressor platform mounts to any standard modern shotgun with threaded chokes. The SS1C is also rated for 20 gauge! This is the world’s first “Multi-Gauge Rated Shotgun Silencer.” The convenient design allows the silencer comes apart for cleaning. Also, we include a front sight plate that indexes to any position you want. This allows you to use a traditional bead sight for shooting. Patent-pending baffle system.