I understand there is conflicting information on the subject, but Brophy's section on the DCM Krags states,

"Only Model 1899 Carbine stocks, Model 1901 rear sights and handguards, and carbine stock fittings were used. Cut down rifle stocks were not used on DCM Krags."

"Unfortunately, no identifying mark was placed upon Krag rifles and carbines sold through the DCM to NRA members. The rifles which were cut down to carbine length at Benecia Arsenal, California are the most difficult to confirm. The barrels were cut to 22 inches and new Model 1903 Rifle front sights were installed. The stock, handguard, stock fittings, and sight were original carbine parts. . . The DCM carbine barrel muzzle is crowned, like original carbine barrels, and the front sight is expertly installed. The Model 1903 front sight fixed stud retaining pin was dressed down to the surface of the stud and was refinished and appears just the same as those on an '03. Kirk and Bannerman jobs were not well done and the pins frequently did not fit the hole and were not flush with the fixed stud."

If this information is accurate, it would seem that a stock with butt swivel, split band with swivel, and band retaining pin is not characteristic of the DCM carbines. As described by Brophy, there should be no butt swivel and a solid band retained by a band spring. It may be worth noting that the DCM carbine pictured in this section appears to have a rifle-style handguard, not the humped version used on many (most?) original carbines with the 1901 sight.

For an authoritative opinion, you could post some detail photos. Dick Hosmer just might stop by and take a look.