This high-quality sound moderator (silencer) can be disassembled and it is intended for high-performing air rifles with ½ UNF thread (a standard air rifle thread used by most of the producers, such as Air Arms, BSA, Daystate, Evanix, Weihrauch etc.) Length 180 mm, diameter 29 mm. The moderator is screwed on the end of the barrel. It is intended for the 4.5 calibres and 5.5 calibres.