Not having any cartouches on the stock hurts. If the stock does not have the Mark I relief cut, you'll know then it is not worth it.

The Mark I cutoff and trigger/sear also make a big difference. You can tell if these parts are present without disassembling the rifle. Here a photo of the cutoff.http://www.vishooter.net/m1903/mk1_trgr_ctf.jpg

Somewhere there is a photo to show if the trigger is present or not.

Yeah, that works, Promo!