Picked up this beautiful 1865 William Palmer carbine.1,001 were produced.1 was the prototype.Purchased for the Union Army.They arrived down south just when the war ended.Never put in battle.This has the Cartouche and proof Mark's still on the stock.Chambered in 56-50Rimfire.I don't think this was fired at all or much.The first bo lo t action rifle ever accepted by the military.It has a bolt action and then you cock the hammer