These original excellent condition Extractors will fit and function perfect in any Springfield 45-70 Trapdoor. If you are a shooter they are a necessity to have as a spare. Springfield Extractor for Model 1873-1889 45-70 Trapdoor. They will fit all Models including 1873, 1877, 1878, 1879, 1884, 1888 Springfield Carbines, Rifles and Cadets Use Hinge Pin (ORI-339) to mount these extractors into your receiver