The Springfield Model 1870 was one of the rifles which used the trapdoor breechblock design developed by Erskine S. Allin. The Model 1870 was a minor improvement to the Springfield Model 1868, and retained most of the Model 1868 rifle features.
Note: Springfield Model 1870 may also refer to the Springfield rolling-block U.S. Navy rifle, employing the Remington Arms Company rolling-block design, and manufactured under a royalty agreement with Remington, for use by the United States Navy as a shipboard small arm.