The accompanying factory letter confirms this Model 1876 as a carbine chambered in .40-60 caliber with desirable casehardened receiver and that it was received in the warehouse on November 4, 1885 and shipped the next day. The receiver is a third model with dust cover guide rail integrally machined as part of the receiver and dust cover with rear serrations. A saddle ring is mounted on the left side of the receiver. It is equipped with carbine blade front and folding ladder rear sights. The top of the barrel has the two-line New Haven address/King's improvement patents legend ahead of the rear sight and "CAL/40-60" at the breech. The upper tang is stamped "MODEL 1876." The hammer, receiver, and lever are casehardened, the loading gate is nitre blue, and the remaining surfaces are blued. Mounted in the correct musket style forearm and solid carbine buttplate. The Model 1876 Carbine was Winchester's only repeating carbine that were built with near full length forearm and forend cap as standard. These carbines are generally encountered in .45-75 caliber. Those chambered in .40-60 caliber such as this example are particularly scarce. Based on research from the Buffalo Bill Historical Center, only 172 carbines are believed to have been chambered for the .40-60 cartridge.