'Whig' - FWIW - That is a nice little Krag with a real model 1899 carbine action and barrel.

I believe the front barrel-band is not legit for an Armory made 'school rifle'. It is very poorly fitted to the stock tip, unlike Armory work, which is finely done. It also lacks the correct shape bayonet lug.

A correct "School Rifle" front band would have been stretched with a press and arbor to fit the larger diameter, at the 'muzzle area', of a carbine barrel.

You have a pretty nice Arm, but, I think this combination has been put together in the civilian market.

I would like to see a picture of your 1902 rear sight with the leaf 'up' so that the spring is visible.