'quietriot':

Your barrel is an original U.S. Krag carbine barrel, as evidenced by the quality of the front-sight attachment.

If your front blade is a model 1896 or 1898 carbine blade, the "C" is normally on the left-side and positioned low and out of sight. The blade was intended to work with the model 1896 carbine rear-sight.

The model 1899 blade is taller and has the "C" normally on the right-side, in plain view. The blade was intended to work with the 1901 and 1902 carbine rear-sights.

A replacement Redfield 102-K "side-plate" screw can be made from Krag and 1903 Springfield barrel-band/sling-swivel screws or stacking-swivel screws. (It is best to alter reproduction screws. The thread is unusual - .187"X 26TPI. You won't find these at ACO).

Reproduction screws appear on ebay or can be purchased from S&S Firearms, Glendale, N.Y. Their catalog can be viewed online.

Pacific K-1 sights show up from time to time on ebay.

Both Redfield and Pacific 'no-drill' sights work fine. Because they usually sit higher than issue Krag rear-sights, a rifle blade .413" tall, (out of its base), is often required.

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