PMI USP pistol in great shape, looks new.Test and hold air and cycles. Received this with a lot of guns. This is the first time I've looked at it. I aired it up and at first it leaked out of the 12 gram seal but I cranked the 12 gram arm and it sealed and cycled. I did not shoot paint through this. I am airing this up as I list it and not when it's sold to test it. So it's sold as is. See photos. Not sure what efficiency is like on these. Probably 12-15 shots since it's a blow back?