WWII collection: Garand, carbine, Winchester Model and Thompson submachine gun. The Springfield 1903 was a heavily used sniper rifle at the time and is noticeably missing from this collection in my opinion.
Steampunk Spy-Fi: Real-life gadgets perfect for a Victorian Era James Bond Ring Gun: This century French ring concealed a tiny gun capable of firing six bullets. Its name, quite appropriately, was "Le Petite Protector.
Guns and the rest — Display of Cimarron Firearms - Revolvers
Arcus Arrow Star - This arrow gun is a smaller and supposedly, more accurate crossbow. Even if this may not be the best anti-zombie gun, it could be used to deter other humans without wasting your precious ammo on the living