List of All Parts of Rifle, U.S., Cal. .30, M1903, M1903A1, M1903A3 and M1903A4 (Sniper's) SNL B-3 2 December 1943 - Simply put, this is a breakdown of all parts that make up the M1903 Series of rifles. There are a number of figures, Stock Numbers, Drawing Numbers, and actual Nomenclature for the particular part in question. The quantity per rifle is also stated. This booklet is a stapled 36 page manual printed on 24 lbs 8-1/2 X 11 sized paper.