Excellent shape. Used under a dozen times. Lots of upgrades. Flatline barrel with battle shroud, Pic rail mount, Red dot sight, Folding stock, Low profile hopper, Upgraded firing bolt. This gun comes with Mask, 20 OZ CO Tank, Extra original hopper and barrel. 200 indoor rubber balls also included. The Flatline barrel makes the gun fire an extra 150 feet. The Response Trigger can fire full auto up to 16 balls per sec depending on how hard you pull the trigger. no batteries needed for this gun. I have put over a thousand dollars into it. I am asking 500 OBO