Both weapons in one
Yeah, and the one in the pic has the XM26LSS, which AFIK is still considered experimental or might have even been scrapped by now, I don't know.That's a cool gun & the ultimate in Home Defense. I've wondered if any manufacturer made something similar for the civilian market
I assume the shotgun barrel would be to short.
There is one that has an M4 with a Remington 870 (IIRC) mounted in the same configuration, called the "Masterkey". Made by KAC I believe, but I might be wrong. I'm not sure what's legally involved in owning a shortened barrel, but an 870/AR-15 combo could be feasible, albeit heavy and cumbersome, I guess.
Jason