I have a few of the panther supressors and for the price they are just fine.
it might sound strange but i find supressors do work on airsoft gun both aeg and gassers.
as mentioned on an AEG the supressors take the "higher freq sound" out of the report giving
a substancially reduced noise for the opposition to zero in on.
on a gas gun they do the job even better.
this is my Mac11 with and without a KJW 5inch supressor.
SV STWS MAc 11 SV foam Mod - YouTube