They're definitely legal in PAAAAAA, I've had airsoft fights on friends' lawns in summer time. It was really fun, the only one that actually hurt was an airsoft shotgun fired point-blank at my leg. It caused a welt, but all the other shots didn't really do much. It really depends on the quality of the gun. Most of the mid-price guns don't hurt really. :-X
(This might also be Emily, who forgot to sign out on a certain someone's account...)
No, I think this is Wally, as he is delicate and would get a welt from a point-blank airsoft shotgun to his leg.

Either way, I would love to have a nerf gunfight sometime when the weather is a little nicer. Maybe I'll come to PA with a
modded nerf gun and we'll have battles.
Ahhh... to relive my wasteful youth playing Rambo vs the Vietcong with my friends. Hopefully I'll stop getting pigeon-holed as the Vietcong and get to play Rambo once in a while.