This is the R&D Cartridge Conversion cylinder with loading gate for the .36 caliber Uberti 1851 or 1861 Navy percussion revolver. You will need to drill and tap two 6-32 screws and cut the loading groove, complete instructions are enclosed. This cylinder converts it to shoot 38 Long Colt cartridge loaded with hollow base or heeled bullets. You can also use 38 Special hollow based wadcutter ammuntion. The cylinders are rated "For Black Powder or Equivalent Loads Only", which includes the current Cowboy Loads on the market. To overcome the larger bore of the original barrel, it is recommended that you use either hollow based bullets or heeled type bullets in your cowboy loads.

(If, after installation, you are unsure of the fit, please take your revolver to a competent gunsmith or contact R & D Gun Shop to make sure you have cylinder installed correctly.)