auto177What is full auto? A fully automatic (or full auto) bb gun constantly sends ammo downrange when the trger is squeezed and only stops when the trger is released, CO2 runs out or the ammoIt’s time to spend less time hassling with CO2 cartridges and more time shooting. The 400e, as the first production full-auto .177 BB gun powered entirely by electricity, offers unmatched convenience. The 400e Gen 2 Metal gives