It’s a arp9 with a few upgrades. Shoots great. But the hopup is broken. It still shoots but i can’t adjust it to shoot higher or lower. PTS centurion rail 12.5in ($115) Defiance grip ZCI high torque motor ($40) Krytac stock M4 7” outer barrel ($25) Maple leaf 6.02mm inner barrel ($35) Shoots around ≈350-365