I've found a few extremely useful reference books, manuals, and other works on US Military rifles that I figure you guys can use.
I'll post the links I have handy and add others later when I backtrack to the source of PDF files in my Documents.
First
''United States rifles and machine guns : a detailed account of the methods used in manufacturing the Springfield, 1903 model service rifle; also descriptions of the modified Enfield rifle and three types of machine guns"
http://www.archive.org/details/unitedst ... 00colvrich"Description and Rules of Management for the US Magazine rifle model of 1898
And Magazine Carbine model of 1899" 1917 edition
http://books.google.com/books?id=XKEtAA ... t&resnum=3"Target range pocket book for use with the U.S. magazine rifle, model of 1903, cal. .30 ... April 28, 1908 (1917)"
http://www.archive.org/download/targetr ... ich_bw.pdfPS
Moderator may want to add this to the stickys