Just wanted to pass on that at least for now, there are groups popping up all over Facebook for gun sales. It's usually more than just guns: bows, tree stands, ATVs and such, but there are some interesting guns here and there.

Two examples:

OOOklahoma Guns&Ammo: http://www.facebook.com/groups/353761338040032/

Big Boy Toys For Sale In Muskogee, Wagoner, Tahlequah: http://www.facebook.com/groups/463187877036724/