All USPs feature a fiber-reinforced polymer frame stiffened by stainless steel inserts at areas subject to stress and friction. Using a modified Browning-type action with a special patented recoil reduction system, the USP recoil reduction system reduces recoil effects on pistol components and also lowers the recoil forces felt by the shooter. The USP recoil reduction system is insensitive to ammunition types and requires no special adjustment or maintenance. Variant 1 is double action/single action with SAFE position; control lever (manual safety/decocking lever) is mounted on left side of the frame. Type Pistol Grips Black Polymer Action dasa Safety Decocker/Manual Series V1 Weight 31.45 oz Caliber 45 ACP Capacity 10+1 Barrel Type Polygonal Rifled Sight Style Contrast Weight Range 16.00 oz to 31.99 oz Barrel Length 4.41" Frame Material Polymer Slide Description Serrated Barrel Length Range 4.00" to 4.99" Sight Configuration 3-Dot