9x19mm Parabellum Other Weapons

The Heckler & Koch MP5SD is an integrally suppressed variant of the MP5 submachine gun. Its built-in suppressor combined with a ported barrel reduces the velocity of supersonic ammunition to subsonic levels, making it one of the quietest firearms ever produced for military service.

The VSS Vintorez is a Soviet-designed integrally suppressed designated marksman rifle chambered in 9×39mm subsonic. It is the sniper variant of the AS Val system, featuring a solid wooden stock, side-mounted optics rail, and select-fire capability.

The Hush Puppy is a suppressed variant of the Smith & Wesson Model 39 pistol, developed by the US Naval Ordnance Test Station at China Lake for Navy SEALs during the Vietnam War. It features a unique two-piece aluminum suppressor that allows the slide to cycle while remaining attached. The weapon was used for sentry elimination and close-quarters operations in the jungles of Vietnam.

The Sterling-Patchett is a suppressed variant of the Sterling L2A3 submachine gun, developed for British special forces during the Cold War. It features an integrally designed suppressor that extends forward from the barrel, with a unique rubber wipes system. The weapon was used by the SAS, SBS, and MI6 for covert operations. It served as a replacement for the earlier De Lisle carbine in British special forces inventory.