Sticking with guns I already own cause I like an extra challenge. Excluding shotguns from the confiscation, I'd go with my Savage Axis II XP in .223. Combining that rifle with my Remington 1100 in 20 gauge, I could do most of the things I do with a long gun today. Wouldn't be optimal. Nor would it be as much fun. But the two together could get the job done.