HK The HK USP (Universal Self-loading Pistol) is an accurate and ultra-reliable handgun. It utilizes a fiber-reinforced polymer frame stiffened by stainless steel inserts at areas subject to stress and friction. The control lever a combination safety and decocking lever is frame mounted and quickly accessible unlike the slide-mounted safeties. The modular design of the USP's internal components allows the control lever function to be switched from the left to the right side of the pistol for left-handed shooters. The USP Compact is smaller and lighter than large frame USPs. The reduction in trigger reach and grip circumference increases concealability and enhances shooting ergonomics.