The Polisport Silencer Protector is a new Performance Part that will excel at protecting your silencer from impacts and falls. This new and innovative part is produced with a blend of silicone and metal, its easily installed without the need of mounting hardware. The installation is easily made by stretching the silicone around the silencer; the strength and grip of the material will hold it in place. Blend of silicone and metal stretch over silencer Thick plastic shield for impact protection No tools needed to install/remove Small version 200-300mm/7.8-11.8in. Large version 340-400mm/13.4-15.7in.