American Rifleman

250 Years of the U.S. Army: Bolt-Actions & Semi-Automatics on the Battlefield

In just a few decades, the U.S. Army would see itself go from a single-shot, blackpowder design in the form of the Trapdoor ...
American Rifleman

250 Years of the U.S. Army: Rifle Muskets, Trapdoors & Early Bolt-Actions

The U.S. Army would enter the 19th century equipped with a smoothbore flintlock musket that differed little from the designs ...
insider.si.edu

Trapdoor Springfield : the United States Springfield single-shot rifle, 1865-1893 / by Bernard D. Ernst and Malden D. Waite

https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries&uri=full=3100001~!134649~!0#focus ...
insider.si.edu

Springfield Armory Allin Conversion Model 1865/1863 "Trapdoor" Rifle

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. overall, rifle: 55 1/2 in x 2 1/4 in; ...