Perhaps Tokyo Marui would want to look into the Origin 12 once they release their airsoft version of the AA-12 Shotgun. In this video by Oleg Volk Photography, the shooter shoots 30 shots in 8 seconds with an Origin 12 Shotgun that has an AR15-like ergonomics and lower recoil. Also seen in the video are the Trijicon RX30 sight and the Silencerco Salvo Suppressor.

Hat tip to the Ravishing Rick Dude for the link.