Custom made silencer adapter for Hatsan air rifles with M14x1 thread to attach your air gun silencer, and with M23x1 thread to fit the 26 mm O.D. shroud.
Material is steel, blued. With thread protector. Through bore is 10 mm. Suitable for .177, .22,.25 and .30 cal. Knurling pattern may be different than the one on the pictures.