We never have civil war items why? We have space, medival, modern, WW2, and stuff from other games. Did we skip a part in time?
Anyway here are the weapons.
Cannon:Should be a vechicle, lots of health,fires a cannon ball projectil,and can move veeeeeeeeeeery slow.
Bayonet: Could be attached to the rifle itself. But you should right click to swing or stab.
Civil war sword:Yes they did have these. Should have a second swinging motion if possible.
Flintlock RIFLE: Should be long and produce alot of smoke when shot. Also should have a long reload time. Forget it.
Musket /springfield: Long produce lots of smoke long reload time.