Original Springfield Musket? Trapdoor? Rear Rifle Sight Base Only

Original Springfield 1861 1863 1864 3 Leaf Rear Sight

Early Trapdoor Springfield Model 1873 Rear Carbine Sight. No Screws Included

Original Model 1884/1888 Springfield Trapdoor Buffington Rear Rifle Sight

Springfield Model 1884 Trapdoor Original Buffington Rifle Rear Sight (Partial)

Original Model 1865 1866 Springfield .50-70 Trapdoor Upper Band & Screw

Original M1884 Springfield .45-70 Trapdoor Buffington Rear Sight Long Screw

Original Model 1883 Springfield .45-70 Trapdoor Rifle Sight Cover with Screw