Hello all, I am looking for any info on this musket or musketoon. It is a WM Mason Taunton musket dated 1863, with an Eagle, US and VP marked on the weapon. I believe it is US mil issue from the cival war and it is only 39 inches long, which leads me toward muketoon but I am no not sure. I know very little about this gun except for the maker was from Taunton Mass and he also made locomotives. It seems rare because I cannot find anything like it on the web but again unsure. It has some brass tacks or nails in the stock, which I was told signify kills/battles. I am looking for any help in the identity or signifigance of this musket. I have enclosed some pics and appreciate the help.