Introduced in 1883. Blade front and buckhorn rear (missing elevator and sight notch) sights with barrel marked with the one line Ilion address on the top flat and "45.70" on the bottom flat. The lower left side of the receiver has the two line Hepburn 1879 patent marking with the serial number on the lower tang. Barrel is numbered to the gun. Checkered round knob pistol grip stock with smooth forearm, metal forend insert and iron carbine style buttplate.