Looking to clean the barrel before initial first shot. Mr.Hollowpoint shows one allen screw to loosen for shroud removal. It appears there are two that run sideways, and two at the bottom of gun threaded upwards. The sideway ones removed easily, the two at the bottom of gun, one loosened no problem. The other I have broken one allen key,(Harbor Freight T handle) and bent the other (supplied from Airforce ). Just a cheapo small screen laptop with no way to play DVD that came with gun.