I have recently acquired a Trapdoor carbine with a very worn side plate eagle and date which appears to be 1873. The serial number, 354**, thus seems to be in the Custer range. What has me puzzled is that all of the fittings, (i.e.) side plate, trigger guard, butt plate, barrel band, etc. are made of what appears to be brass. I can find no reference of Trapdoor Carbines having brass fittings in my limited research that I have been able to complete. Can anyone please help me with any information regarding these carbines having brass fittings?
Many Thanks!