Looking at my copy of Bill Mook's 'Krag Crap' notes, #21015, would have likely been assembled around September, 1895.

I think Ned's point about 're-building' is well taken. Knute's Krag was taken apart to perform model 1896 updates so its present stock is not the one it was born with.

FWIW - The term "magazine-rifle" seems to me to lack any specific meaning. All Krags, (except .22 cal. 'gallery rifles'), as well as most bolt action rifles, have a magazine and are thus magazine rifles.

Although 'Magazine Rifle' is used in official documents, it is kind of like calling a rifle a 'repeater'.

The term 'Magazine Rifle' is used in official Ordnance Manuals in conjunction with specific Krag models.

It is not exclusive to the rifles that deviate from 'standard models' and show a 'hybrid' mixture of transitional features - IMHO.