Jeremy - That is a very nice looking Krag and "Welcome!" to the KCA Forum.

I believe your Krag's Stock is Armory replaced, because of the 're-curve' of the Butt-Plate 'toe' and the shape of your Stock's Comb and Wrist area. (The original stock would have had a Flat Butt-Plate without a 'Trap' and a Thin Wrist).

Your Bolt has a model 1892 Bolt-Sleeve & safety with the 'thread like' ribs at the rear of the sleeve. You have the up-dated extractor with its 'hold open' pin, the extractor is held on by a rivet (rather than a screw), your receiver is notched for the 'hold open' pin.

You have a very nice early Krag that was legitimately updated.