Everything you need to drop into a gun and run it. -cosflaw protech mk2.5 -ninja 90/4500 tank with last hydro on 3/07/2018 -firebase style regulator with a single qd line -amped Airsoft battery for hpa units -amped Airsoft gun side quick disconnect Hpa unit has never been put in a gun, only test fired to test functionality. Price is shipped Message for more details