U.S. rifle, cal. .30, M1 : ordnance maintenance / War Department - USA Technical Manual, TM 9-1275 Advanced glider training - USA Voorschrift, Technical Manual, 1-815 Ordnance maintenance u.s. rifles, cal..30 M1, M1c (sniper's) and M1d (sniper's) - USA Technical Manual, TM 9-1275 Receiver-Transmitter BC-1335 - USA Voorschrift, Technical Manual, 11-879