Originally Posted by Blue Duck
Some semi-auto shotguns were used also, by foreign countrys.
And by this country
Originally Posted by tony pasley
A few years ago they had one on the market I forget who made it but it was an ar on top and 12 ga. semi-auto on bottom.
It was the Crossfire
. Actually a pump .223 over a pump 12ga. scattergun. Possibly the only weapon that could malfunction with two calibers at once. Plus it was heavy and insanely awkward, and the designers couldn't pronounce "ergonomics" if they tried. Save your money.