I live in Mayberry cow town USA.. we don't need much legal here to do anything. 
I won't hunt with it..( not REAL hunt) I want a rifle.. not a pistol.. and I need it to not be too awful loud.. I want it to shoot possums and critters at night.. I live in town ( if that is what you call it..LOL) and I could probably get by with shooting a 22 with CB caps.. but...I'd rather have the pellet rifle...
You want a BB gun? I'll make you one heck of a deal on a darn cool one. I bought a Umarex STEEL STORM!!!!! select fire BB gun. I apologize for the all caps, but Dr. Freud was in the house when they named that thing.

Anyway its select fire. Single shot semi auto or full auto 5 round burst mode at about 430 fps (good for rats, too light for possums). The thing is a blast. Downside is its too loud for my suburban neighborhood. I've barely shot it, but I love the thing. Its just that if I can't shoot it in the backyard its no good to me. They look like a mini uzi or tech 9.
New, they go for $80. I bought a reconditioned one from Airgun Depot for $56. I'll throw in a bunch of BBs and free shipping for $50. It really is a very cool toy, and surprisingly accurate. I just need something a little more low profile for backyard plinking. If you're intereted PM me. As always, if you don't like it, send it back for a full refund. And let the barn rats beware!
Here's the link to the description.
If you want a rifle, check out the link and look at the reconditioned RWS guns. They are lifetime shooters, and plenty enough in .22 to take a possum or coon. Ditto with the gamos, but they are plastic guns and I like the steel and wood of the RWS. My RWS 34 (.22 at 800 fps) has killed plenty of tree rats and a few possums.
FQ13
PS Don't shoot your eye out.
http://www.airgundepot.com/