You fellas need to do some serious study on Civil War revolvers!!!
He said it is a REMINGTON! That means it is NOT a Colt anything!
About like saying a Ford is a Chevy Malibu!
Since I presume he is reading Remington off of the revolver, IF it is cap & ball it is a Mod 58 and they only came in 44. There was No Army or Navy - that was strictly Colt.
Photos will quickly answer most questions.
Sarge