Springfield model 1884

The Springfield Model 1884 was a United States single-shot breech-loading rifle that used the trapdoor breechblock design developed by Erskine S. Allin. It was an improved replacement for the Springfield Model 1873, carrying forward improvements made between 1878 and 1879 and adding a serrated trigger introduced in 1883. Its best known feature was a rear sight designed by Lieutenant Colonel Adelbert R. Buffington of the Army Ordnance Department, which had a rack and pinion windage adjustment and a raised leaf graduated from 200 to 1,400 yards. Marksmen liked the sight, while ordinary troops often found it an annoyance. A carbine version and a rod bayonet version, later designated the Springfield Model 1888, were also made, and about 232,500 rifles were produced between 1885 and 1890. It remained a main American service rifle until the Springfield Model 1892 bolt action rifle began replacing it in 1892.