German Sports Gun
Seems pretty loud for having such a large suppressor (if that's what it is). Not sure I see the interest in a humongous look-alike gun for firing 22LR? Are Germans limited in what they can own?
It's not a suppressor on it. Just a big barrel shroud to make it look like an mp5. I shot one not too long ago, neat gun, but not as accurate as i was expecting for a $400 .22. Roughly 3-4" groups at 50 yards using the same ammo a 10/22 puts in a 1" group at that range, with a marlin model 60 about the same or slightly better. Had some malfunctions too, 5 or 6 out of the 200 rounds or so we fired.
A little review of the gun.
http://demigodllc.com/articles/gsg-5-mp5-in-22-lr/?p=1