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The 'Universal Self-loading Pistol' was designed to incorporate many features that the military and law enforcement agencies deemed vital. It uses the Browning cam-breech-locking system. The USP has various safety options. The double-action (DA/SA) variants can have either a decocking lever or safety-only lever on either the left or right side of the frame, or no safety lever at all. The double-action only (DAO) variants can have a safety-only lever on either the left or right side of the frame, or no safety lever at all. DAO variants have a bobbed hammer.![]()
| Manufacturer: | Heckler & Koch |
| Gun Make: | Heckler & Koch |
| Gun Model: | Heckler & Koch USP Stainless .45 ACP |
| Gun Type: | Pistol |
| Caliber: | .45 ACP |
| Barrel Length: | 4.41 in |
| Housing/Frame Material: | Polymer |
| Material: | Integrated Polymer |
| Sight Configuration: | Fixed |
| Action Type: | Recoil Operated Semi-Automatic |
| Safety Type: | Frame Mounted Hammer Lock |
| Trigger Action: | SA, DA or DAO |
| Rifling Profile: | Polygonal |
| Magazine Capacity: | 12 Round |
| Weight: | 27.7 oz |
| Height: | 5.55 in |
| Length: | 7.87 in |
| Muzzle Energy: | 349 ft-lbs |
| Muzzle Velocity: | 827 ft/s |