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Theohazard · December 10, 2013, 10:42 AM

I don't have any personal experience with suppressing a Sub-2000, but here are two observations I have based on the design:

-It's a blowback-operated action and this means that more hot gases usually escape from the chamber area compared to a locked-breech design (and there will be even more gas blowback because of the suppressor). So blowback firearms tend to be louder when suppressed compared to locked-breech designs due to the larger amount of loud, hot gases escaping from the chamber.

-The barrel is 16" long, so a lot of commercially-available 147 gr. 9mm ammo that's subsonic in a pistol will be supersonic in the Sub-2000, or at least close enough that some rounds might be supersonic and some might be subsonic. If you don't reload you're going to have to find some 147 gr. ammo that's consistently subsonic or just use 158 gr. ammo.

December 10, 2013, 10:42 AM	#2
Theohazard Senior Member Join Date: April 19, 2012 Location: Western PA Posts: 3,829	I don't have any personal experience with suppressing a Sub-2000, but here are two observations I have based on the design: -It's a blowback-operated action and this means that more hot gases usually escape from the chamber area compared to a locked-breech design (and there will be even more gas blowback because of the suppressor). So blowback firearms tend to be louder when suppressed compared to locked-breech designs due to the larger amount of loud, hot gases escaping from the chamber. -The barrel is 16" long, so a lot of commercially-available 147 gr. 9mm ammo that's subsonic in a pistol will be supersonic in the Sub-2000, or at least close enough that some rounds might be supersonic and some might be subsonic. If you don't reload you're going to have to find some 147 gr. ammo that's consistently subsonic or just use 158 gr. ammo. __________________ 0331: "Accuracy by volume."