This adapter allows a 22mm muzzle/silencer to be attached to a M22 x 1.5 muzzle thread for Defensor HDC 68C HDX TX68 Shotgun and TC 68 Carbine barrels. Attaching this adapter will add approximately 1/4 inch (7mm) length to the barrel. Made of 6061 Aircraft Aluminum.
Male side: M22
Female side: M22 x 1.5