Heckler & Koch MK23
.45 ACP
This was specifically designed in 1989 for the US Special Operations Command (SOCOM) and has been in use since the 1990s by special forces. It is a match-grade pistol with a polygonal barrel. The .45 rounds are subsonic and quietened very effectively by the Knights Armament Company (KAC) suppressor. It comes with a laser aiming module by Insight Techology and is the basis for the HK USP, the HK USP Tactical and the HK USP Compact Tactical.