I got to shoot something like that I'm not sure if its the same but it was a bolt action 12 gauge that had a detachable clip and held 3 rounds with a built in changeable choke. It was oddly fun to shoot.
"come on you sons of b***hs! do you want to live forever?" Sergeant Daniel Daly, USMC, Belleau Wood France June 6th 1918
"You can be as mad as a mad dog at the way things went. You could swear, curse the fates, but when it comes to the end, you have to let go" Benjamin Button