I would love to see a two shot 18" barreled for home defense like the old Browning Double Automatic. Shot my Dad's as a kid, that thing was fast. load one in chamber, then one on the load gate, as one is fired you put another on the gate. If you fire both, when you put a shell in the side port it autoloads into the chamber and then you load another on the gate. Hard to explain, but awesome to use.