Well, total confusion. It turns out my rifle is an 1885 model after all. I need an extractor for it. I believe it was one of the first rifles issued to the U.S.S. Philadelphia since it has "Philadelphia" stamped into the comb of the buttstock.
I am looking for some bolt parts for my 1882 Remington Lee. I have what I believe is one of the first ones ever issued.
I originally posted this as an 1885, but I have since found out it is an 1882 first issued to the U.S.S. Philadelphia.