Most comprehensive 1884 Trapdoor parts diagrams (found in reprint manuals, collector’s guides, or online resources like Numrich or the NPS archives) offer the following:
The "Trapdoor" name comes from the distinctive hinged breech block. In the , the breech mechanism is the most complex and critical area. 1884 Springfield Trapdoor Parts Diagram
: A defining feature of the 1884 model, this sight is highly adjustable for windage and elevation, with some versions graduated up to 1,900 or 2,000 yards. Most comprehensive 1884 Trapdoor parts diagrams (found in
The Model 1884 features several distinctive components that separate it from earlier versions like the Model 1873. 900 or 2
A two-piece assembly that houses the trigger. Understanding the Buffington Sight