Adapter for Hatsan BullMaster QE 1/2-20 UNF
Custom made silencer adapter for Hatsan air rifles with 1/2-20 tpi thread to attach your air gun silencer, and with M27x1 thread to fit the 28 mm O.D. shroud – for newer, 2018 models (Barrage, Bullmaster, Galatian and Hercules).
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. Item is supplied without O-Ring.