Your lighter colored stock has been sanded quite a bit, the darker one probably none at all.  Got a pic of the right side of the rear sight?  Looks to me to be a 96 carbine rear sight, as mentioned at least the ladder.  There should be a C on the back right side of the ramp too.  Someone was nice enough to buy one I had for $700 recently.

Your rear sight appears to be a complete model 1896 carbine sight.

Your hand-guard appears to be a heavily sanded model 1892 rifle hand-guard.

Your stock is cut-down. It was likely a rifle stock, refurbished prior to WW1, inspected and marked by J.F. Coyle. (It could also be a cut-down 'school rifle' stock, but, less likely).

If the photo with the 'dovetailed front-sight' is this Krag's muzzle-crown, you simply have a rifle that was cut-down to 22+ inches for hunting.

(The model 1896 carbine rear-sight and 1892 hand-guard are a nice bonus. They have nothing to do with the rest of this Krag).

You bought a desirable carbine sight, worth what you paid. Consider the rest of the stuff as free.

IMHO - This thread is confusing because of the 'mixed blend' of pictures.