https://i.imgur.com/B3gceVM.jpg Built this M4 and haven’t used it due to other guns. Complete Deepfire Reinforce gearbox as base. Perfect compression and reshimmed. E&C Colt Trademarked metal body. Dust cover works but bolt catch does not due to gearbox used. You have to hold charging handle back to adjust. E&L furniture. G&P buffer tube which holds a 7.4v 2000 mah Li-Po easily. Buffer tube has numbered positions which are viewable with stock. Unknown front sight and barrel nut. Krytac 10.5 outer barrel. Arcturus motor. ARES rotary HopUp. Gun is solid with only slight wobble with stock on buffer tube. Inner barrel is 285 mm 6.02 ZCI which has been lapped and elvishtac r-hop. Gate PicoSSR3 mosfet installed. Gun is little picky on magazines. My PTS EPM feed flawlessly. Weakest parts are definitely motor and Hopup unit but I don’t use it enough to warrant upgrading further. Less than 500 rounds through it. Shooting video on request. Prefer local sale which will have priory over shipping. $150.00 + shipping. Meetup in IE or OC. https://imgur.com/a/sloAL2a