Space- fire E- eject magazine R- chamber round Z- reload magazine V- safety/fully auto mode Click magazine- load magazine (20 rounds) If your gun won't fire: -chamber a round -make sure magazine is loaded -make sure safety is off There is also a suppressor and a laser sight for this gun. For the suppressor, drag it to the muzzle to use it. To use the sight, drag it over the rail on the gun.