Heckler and Koch HK45/USP45 Pistol Thread Protector - M16x1LH, 45 ACP

The protector is designed for the H&K USP series 45 caliber pistols. This is a machined “METRIC” M16 X 1LH thread protector, with a fluted .750″ OD. It fits Barrels and Adapters Using 16 x 1LH Threads. Don’t run the risk of damaging the threads when muzzle accessories are not being used. Protective Cap is 4140 Steel with a Black Oxide Finish.