I have been collecting Milsurps for several years now and am currently looking at several Trapdoors that a local dealer has. He has an 1873, 1884, and what I believe is a Cadet rifle as it is slightlly shorter than the other two. The 1873 seems to be in the best shape of the three and the one I am most interested in. The 1884 has a cracked stock at wrist. As someone with no knowledge of these rifles, what should I be looking for besides obvious bore condition? Thanks in advance to any answers received.