These original, excellent condition, 3 Notch Sears will fit and function perfect in any Springfield 45-70 Trapdoor. They were initially used on the Model 1878 and replaced the 2 notch Sears.
They will fit all Models including 1873, 1877, 1878, 1879, 1884, 1888 Springfield Carbines, Rifles and Cadets.
If you are a shooter they are a necessity to have as a spare.
Use ORI-344 Model 1873 Three Notch Tumbler with this Sear.