The Shell-Ejecting PPS M870 Tactical Airsoft Shotgun is now on pre-order at Airsoft World though its ETA is January 2016... "Taking realism to the next level, PPS have introduced the gas shotgun for those who want it as real as it gets while looking Tacti-Cool at the same time (yeah, some of us are fashion concious!).

Each shotgun shell is in effect a mini MOSCART, holding the gas and 3 BBs. You load this like the real thing and it'll eject the spent cartridge on each cock!

Power is adjusted by changing the gas you use and for those too wimpy to run these 'because you might lose a shell', well, they do a shell catcher to boot!

Supplied with 2 shells."