Stalon RF is an efficient and versatile novelty silencer designed for calibers .17 – .22, which can be used with rimfire cartridges. Stalon RF is excellent for both rifles and pistols. Thanks to its unique asymmetric internal structure, the Stalon RF effectively suppresses the sound and recoil of both .17hmr, .22lr and .22wmr cartridges. Now you can use one and the same silencer on all your miniature rifles and pistols! • length 132 mm, extends the gun 117 mm • outer diameter 31.5 mm • weight 96 g • pull-out one-piece asymmetric inner structure • material anodized high-quality aluminum • available with threads 1/2"-20UNF and 1/2"-28UNEF • attenuation 29.9 dBc (.22lr pistol)