Well, since I was going to gut the thing out, didn't see it was necessary to get a mauzen.
As for upgrade, figure I would change out the cylinder and the inner barrel once it was back in stock. But would just the two make that much difference?
Another thing, I saw a tanaka gas sniper, that thing can sure snipe. He was running 0.43g and able to hit a target about 250feet easy, maybe these gas sniper are good?...