Matt,
what I'd do is lose the car, get a bicycle and some rain gear. Think of the guns as your ace in the hole, for when you **really** need the cash.
If I lived on N. Shore Mass, I'd consider doing some fishing. I knew guys in Philly did that, they'd go to the Jersey shore with rod and reel, catch a big mess of fish, then sell them in the neighborhood. Maybe buy some too, off the guys coming in from party boats.
Just a thought. Lot of people make a pretty good living subsistence hunting, fishing, trapping, gathering wild plants for sale. It's all off the books.
Anyway, good luck.
jn