Selling a great condition G&G M4a1 with modifications. Features a unique RARE full metal S-System / ZET style rail unit, similar configuration featured in Call of Duty Modern Warfare 2s M4A1! The gun itself is very high quality, constructed of both metal and drop resistant polymer, this thing is an absolute tank. Gearbox is a fully built reliable Metal gearbox, LIPO ready and easy to upgrade. Clocks in at 390 FPS, with great accuracy and far range. New HopUp unit installed, easy to adjust and lobs .30 bbs well! This is the perfect mid-far range Electric rifle. Recently has been reshimmed and cleaned by EVIKE Tech. Runs reliably! Package comes with -G&G M4a1 custom - S-System / ZET Rail system - TWO high capacity 450 round metal magazines - 6 point adjusting LE stock - 2 point black sling - .25 gram precision grade bbs (Eotech scope, vertical forgrip, peq box, and other accessories not included in price & for sale separately)