This is a second pattern Bendix-Hyde carbine, made for the M1 Carbine trials. The first Bendix-Hyde had a number of features that Ordnance requested be changed (including a pistol grip), and this was the modified version submitted for the second round of tests. It lost out to the Winchester design, of course, which became the M1 Carbine.
I had a chance to take one apart at RIA, so I made sure to get a photo or two (click to enlarge):
Colt, like all the other manufacturers in the US, was prevented from making cartridge revolvers by the Rollin white patent, which finally expired in 1869. This left them limited to their percussion revolvers, the 1849, […]