What about a SKS? The 7.62 ammo is cheep at around $0.20 a shot. Guns are readily avaliable for cheep. The thirty round clips are only 12 bucks a piece, and look hella mean sticking out from under the gun. Plus if its dark out the 4 inch flame shooting from the end of the gun is a real “why the F did we choose to mess with this guy” as they run away and you throw the next clip in. Sure sub 3″ groups are un heard of, but at 6 bucks per clip you can put a lot of FMJ’s flying at em before breaking the bank. The loose tolerances on the gun make for conceiling it in places like flower beds and sandboxes possible. Just shake the dirt out, and rack another if the neighborhood block party turns in to all out riot. SO my vote would be for a SKS, and I’ll sum up the whole gun with two words, CHEEP and SCARY.