The modification consisted in changing the magazine, chamber, and bore of the Enfield rifle so that it would take the U. S. service .30-calibre rimless cartridge instead of the British .303 rim cartridge. So rapidly were the plans worked out, the drawings and specifications produced, and sample rifles submitted and tested, that within less than eight weeks after the declaration of war orders were given to Winchester and the two Remington concerns for a million “modified Enfields,” as the new weapons were called. Putting aside the keen trade rivalry which had formerly existed, the three plants virtually operated as one mammoth rifle factory, so that when one shop found itself short of parts it was promptly supplied from another where there was a surplus. The combined factories had so fully gotten into their stride by the fall of 1918 that, when the Armistice was signed, they were turning out approximately 10,000 rifles a day, this being in addition, remember, to the spare parts which were being manufactured at all three plants as well as in the government establishments at Rock Island and Springfield. The records show that more than 2,500,000 rifles had been accepted by November 9, 1918. Add to this the 600,000 Springfields and the 160,000 Krag-Jorgensens which we had on hand at the beginning of the war, the 280,000 rifles which had been manufactured for Russia but which were taken over by the United States, and the 20,000 Ross rifles purchased from Canada, and it will be seen that we had a total of more than 3,500,000 rifles. As only about one-half of the troops in an American division carry rifles, we had, therefore, enough weapons to equip an army of 7,000,000 men.