MP5 bolt speed comparison suppressed/unsuppressed with and without subsonic ammo.

Описание: Subsonic ammo = FMJ 140gr handloads
Regular ammo = FMJ 124 gr GECO
Suppressor = ASE UTRA SL6i SMG MP5
MP5 = MKE T94

Tldr: Try to shooting subs when using a suppressor or see if you can get a locking piece meant for suppressed MP5:s. If you shoot regular ammo be prepared to change the extractor spring regularly.