The lock is a Springfield but dated 1864 so it is not original to this rifle musket. I presume it is a field? replacement due to the change from the 1863-64 style hammer which would not impact the tube correctly on a M1861 type barrel to a M1861 type. It appears to have been on the piece for a long time as the patina matches the rest of the parts very well.

I believe that the particular combination of inspector marks can help determine which maker made (at least) the stock as only certain combinations appear on any particular maker. I am not sure of the two here as I have always had trouble reading this script style mark, but I believe the left mark is OWA (O.W.Ainsworth) and the right on is JM (could be John Maggs or Julian McAllister). The other stamping I really can't make out. It appears to be a J. then a K or A U ? N?

None of the books in my admittedly limited library list the inspectors that are found on each maker, but I am hoping that such a listing exists and can identify the maker of the stock and possibly the rest of the musket. I heard somewhere there exists such a list but I don't have access to it if it does.

As I said, the oral history says that the musket was sent back by a member of the 10th West Virginia Infantry and was picked up during the pursuit of the Confederate Army to Appomattox. If that is true (possible but not able to be verified) it may be that this is one that was rebuilt after capture somewhere during the 1864 campaigns. But of course that is likely simply wishful thinking.