'Bob W.' - It would appear your Krag, #273935, is a cut-down U. S. model 1898 Krag rifle with a model 1899 carbine hand-guard.

Your wood appears to be a cut-down rifle stock fashioned to look like a carbine stock.
I don't see a (carbine stock) barrel-band retaining spring on the forearm tip. The Butt sling-swivel also suggests this was once a rifle stock.
It is likely a close examination of your forearm 'tip' will reveal a wood plug, concealing the stock's lightening channel.

At 20 inches, your barrel has definitely been shortened. Your metal looks refinished with a modern bluing process. Possibly the rear-sight mounting holes have been 'filled' with cut-off screws, that were then filed to blend in.

The usual markings on a Krag barrel are a large "P" (proof) on the bottom of the barrel, (located back near the action), and a fine index-line at 9 O'clock, that lines up with an index mark on the front edge of the receiver ring.

If your wood is original, the most valuable part of your Krag is its hand-guard.