Not sure where you got your info from, the Americans supplied the P14/17 rifles not M1icon's or 1903's, and the bayonet for them is the P17 bayonet that was similar to the 1907 with a higher muzzle ring. the 1903 and M1 used a 30.06 calibre round which the UKicon didn't use so they would have been useless and a great burden to have two different ammo types.