Upgraded VLTOR M4 for sale or trade, the body alone is worth $150 with the VLTOR rail, gas block, and stock. The brand is either King Arms or G&P. THIS GUN OUT SHOOTS KRYTACS!! Upgrades include: Extended 6.03 TBB VFC high torque motor New VFC piston New Action Army cylinder New G&G green bucking New SHS nub Matrix M110 spring SHS metal hop unit Classic Army USA 12” outter barrel Troy Industry front sight Offer away the worst I can say is no and I will let it go for cheap!