Some bad info in this thread. The rifle originally presented has been modified OUTSIDE of the army, giveaway is the band front sight - never used on the Krag. There are three "official" full-stocked configurations:
(1) Standard 30" infantry rifles - several hundred thousand produced, in three basic models: M1892 (most have been altered to M1896), M1896, M1898.
(2) "Board of Ordnance & Fortifications rifle" with 26" barrel (100 made, occur 387xxx-389xxx, all cartouched 1902, rare)
(3) "School gun" (what "Slamfire" appears to have) made from 1899 carbine barreled actions, with altered M1898 rifle stocks and upper bands, but NOT at Benicia, 22" barrel, muzzle turned down to accept M1905 bayonet. About 7000 made. USUALLY found with M1901C sight, and most occur in the 220-230xxx range. Very similar to the "Philippine Constabulary Rifle" of which NO examples are known in the US.