They were mainly based upon the Colt Model 1855 Sidehammer Pocket Revolver developed by Elisha K. The design was essentially similar to revolver type pistols, with a rotating cylinder that held five or six rounds in a variety of calibers from. The Colt New Model Revolving rifles were early repeating rifles produced by the Colt's Manufacturing Company from 1855 until 1864.
15-inches, 18-inches, 21-inches and 24-inches
