MP5SD at the Range: Subsonic vs Supersonic
This guide details a range test of the Heckler & Koch MP5SD submachine gun, comparing the acoustic signature of subsonic versus supersonic 9x19mm Parabellum ammunition. The test, led by firearms expert Ian McCollum, demonstrates the effectiveness of the MP5SD's integrally suppressed design and perforated barrel in reducing standard supersonic rounds to subsonic velocities. The conclusion highlights the weapon's ability to achieve effective suppression without specialized subsonic ammunition.










