HECKLER & KOCH HK45C USP45C 10RD 45ACP MAGAZINE FACTORY MAGAZINE 2-PACK. HECKLER & KOCH HK45 COMPACT USP45 COMPACT 10-ROUND 45ACP MAGAZINE This magazine has the extended +2 floorplate. HK45C, HK45C Tactical, HK USP Compact 45, HK USPC 45 Tactical This is an H&K factory original magazine. Manufactured to the same specifications and tolerances using the same materials as the original magazine that came with the pistol, ensuring optimal fit and reliability.