For collectors and arms students of today:

"Transitional Magazine Rifle" would be a nice label for the early U.S. Krag-Jorgensen rifles that were pre-model 1896, but, deviated in various aspects from U.S. model 1892.

IMHO - "1892/1896" is a handy & good label, (but, totally unofficial), for early U.S. Krag-Jorgensen rifles that were updated to model 1896 features, (bolt 'hold-open pin', clearing-rod channel filled, and rear-sight 'flavor of the day').