HK45 Pistols An improvement to the highly regarded USP45 released in 1995, the HK45 is packed full of userinspired enhancements The HK45 pistol features changeable grip panels, a picatinny milstd1913 rail, proprietary oring barrel, 30% reduced recoil, and USPstyle control lever Ideal for personal defense, the HK45 can also be converted