Will do $150 shipped if I swap for a standard motor. Just ask. I took the Polymer Licensed Elite Force Mp5k and did basically everything you can to it, and more. Made functions better, tightened tolerances, internal and external upgrades for longevity and reliability. Externals: -added a metal 14mm ccw threaded tip -adhered a steel strip of reinforcement around magwell so it will never crack -added a 3D printed PDW stock with QD sling loop and option for a battery extension tube -tweaked charging handle internals for stronger slap and battery accommodation; you can HK slap with battery installed, and the charging handle will virtually never break. -made original orange tip threaded, added cuts to make it “castle style”, and painted black -threw on a top rail for optic Internals: -6.01mm steel tightbore barrel -modded V.2 gearbox shell (top is flat like a v.3) for internal battery accommodation -installed Optical Hybrid ETU and ran wires to the rear with option for built in (and included) custom Echo1 11.1v battery, OR you can run included extension wires into the stock, with use of the battery extension tube, and use aftermarket 11.1v batteries with Deans. -Cyma Platinum High Torque Motor -metal rack piston -G&G heat treated 18:1 gears with sector delayer chip; well shimmed All in all, the Aeg runs at 20RPS on an 11.1v battery, and shoots about 280FPS on .20g bbs. Included is everything you see: Mp5k Flash hider Top rail 3D printed stock Battery extension tube and wires Echo1 11.1v Lipo Battery 2 highcap mags and 1 midcap mag Many pics and shooting vid upon request! Cheers🍻