
Originally Posted by
John Kepler
SRS is the primary resource for your search as Johnny P has indicated. However, you have to be made aware that what you are asking is nearly impossible. The US Army wasn't all that interested in what firearms went where other than at Company-level. What records were kept at Springfield Armory were very deliberately destroyed in the late-1960's when the Armory was closed...that apparently included Contractor records as well (the M1903, in addition to Rock Island and Springfield Armories was produced under contract by Remington and Smith-Corona).
FWIW: The M1903 was made in 5 separate models, the M1903, the M1903A1, the M1903A2 (not really a rifle, but a sub-caliber artillery training device), the M1903A3 (the WW II version of the rifle), and the M1903A4 Sniper Rifle. All models of the rifle are clearly marked as such.