Some different examples of mountain rifles at Grayling this year. There are a couple in this group that I know very little of, but hope to learn more about.
Pack Parrott, 2.9 inch bore.
Ellsworth, 1.5 inch bore.
Hughes gun, 1.6 inch bore.
British mountain rifle, this gun had two sets of sights, and the barrel could be removed just ahead of the trunnions.
Details unknown to me.