Heckler & Koch USP & USP Compact Variant 3 4 Detent Plate Factory OEM Variant 3 4 detent plate. Manufactured in Germany from stamped steel. This is a factory original part from designed to fit H&K USP and USP Compact pistols. The detent plate is stamped “3 4” for those pistol models with a double action/single action, decocking lever and no safety. For use in: HK USP – Variant 3 & 4 HK USP Compact – Variant 3 & 4
