Custom made silencer adapter for Umarex Gauntlet air rifle with 1/2-28 tpi UNEF thread to attach your air gun silencer, and with M20x1 thread to fit the 22mm OD shroud.
Material is steel, blued. With thread protector. Through bore is 8 mm (0.315″) wide. Suitable for .177, .22. and .25 cal. Knurling pattern may be different than the one on the pictures. Without o ring found on stock shroud cap.