I built this two-tone Full metal F1 M4 SSG. 8” OctaArms Mlok rail, Krytac flash hider, Magpul style motor grip, rotary hopup and TRON tube style stock with cheek pad and QD shoulder plate for battery storage. Self retained into the lower with no mounting hardware! easy access to quick change spring guide on the gearbox. Speaking of gearbox, totally reworked radiused black shell, with 13:1 high speed gears, upgraded compression components, and an inline Mosfet wired to Deans. Mechanical trigger mod by yours truly eliminates trigger take up, makes semi reliable and snappy with clean reset. You’ll be shocked it’s not an ETU. No need. High toque motor installed. Rear wired to Deans. Rated for indoor and outdoor and shooting around 330fps at 20rps or so. 11.1v battery recommended but NOT included, NOR is the grip or sight(s). It does however include everything else you see, like the high cap Pmag. Asking $320 shipped. Shooting video upon request, and I’m willing to answer any and all questions about it!