Upgraded barrel, m130 spring, super high torque motor, wired to deans, upgraded cylinder and piston. Will come with magpul foregrip, truglo red dot, and 3 mid caps. I don't have any working batteries for it. May trade for airsoft rifles only. No pistols, shotguns, or bolt snipers. Looking to trade possibly for a M4 style gun with at least a 12 in barrel to drop my polarstar into. Otherwise $220 obo LOCAL MEETUP ONLY