Matrix base gun with microswitch trigger, quick change spring guide and in-line mosfet. Externally, it has a real steel Geissele 13 inch MK4 rail with Geissele gas block. These are $275 alone. In addition, it comes with red/green dot sight, Atlas Custom stock and pistol grip, replica Surefire, replica peq with green laser and dual pressure switch and qd suppressor with flashider. NO TRADES OR PART OUTS, requests will be ignored and blocked, if you ask for PayPal then don’t pay you’ll be blocked, serious inquiries only, don’t waste your time or mine.