WTS: GBB USP with 3 mags and SERPA

[Fergus]

WTS: USP GBB. I got this in a lot I bought and was told it's a KWA, however it has no markings on it, so I'm not sure what brand it is. It is full metal, comes with 3 mags, all leak free as I've tested them. There's a threaded adapter on it also that comes off and a SERPA with belt and paddle mounts.  The gun works perfectly but has obvious signs of wear. Asking $150 shipped for all of it.