I am lucky enough to live in a house built by my great great grandfather, Ira Lunt. He served in 2nd Regiment Company D US Sharpshooters out of Maine. Here is his target/bench Rifle he used. My question is if anyone knows anything about this specific weapon. One pic shows the stamp of where the barrel was cast and the name M. W. Long. I assume this is Malcolm Long the gunsmith. But I can’t find out much about him or his weapons. Was hoping I’d come across a CW gun expert. I’d also love to get it appraised.