The Springfield Model 1869 was one of several model "trapdoor Springfields", which used the trapdoor breechblock design developed by Erskine S. Allin.
Originally, the trapdoor Springfields were created to convert Model 1863 Springfield rifled muskets to breech-loading rifles at a relatively low cost.
The Model 1869 Cadet Rifle was a shortened version of the Springfield Model 1868.
The Model 1869 had a narrower buttplate and the stock around the barrel was thinner than on the Model 1868.
This model has its own sequence of serial numbers, running from 1 to approx.