New Haven Arms Co. Model 1860
This rifle was developed from the Volcanic and was designed around a new cartridge, the .44 Henry "flat".. a rimfire .44 that used a metallic cartridge case, which was quite an innovation at the time.
There is no loading gate, the magazine being loaded from the front.
The rifle was produced in both brass and iron frames. While not made in large numbers it was a revolutionary firearm in the Civil War.