Thread: suppressor pressure

The pressure is retained for longer with the supressor think of it as a bleed off valve.
To work effectively it has to reduce pressure by controlling expansion, reduce gas volume by cooling, and reduce gas velocity by creating turbulence as well as all the above.
Gas operated rifles show the effect of supressors quite well, ar type rifles I believe can be over gassed by them.
Over barrel supressors with larger first expansion chambers than muzzle forwards may let the pressure drop more quickly but im no expert.
Thats my 2 cents anyway.