Springfield M6 Scout
 

Saw one of these on "Mail Call" a few years ago. Thought they must be cheap and it might be fun to pick one up.

Apparently they have gone from around $160 NIB to over $400 in the last few years. Maybe the "Mail Call" episode made them desirable?

I think it might be fun to get a cheap single shot shotgun and modify it to fold into itself along its existing hinge...