US REMINGTON M1903 SPECIAL MODEL?

[ELMERFUD]

US REMINGTON 1903 NRA SPORTER HOW CAN I TELL? THE BUT STOCK SAYS (DUPONT REPRENE,GRAND LUXE,MATCH MODEL) I HAVE NOT REMOVED FRONT SIGHT YET . THE ONLY OTHER MARKINGS ARE THE SERIAL # 313**** STOCK IS HIGH MONTY, BLACK CAP ON FOREGRIP, LYMN SIGHT SET,OVER ALL RIFLE IN SUPERB CONDITION. ONLY INFO I FOUND ON SERIAL # IS THAT IT IS MADE 1942 -MAY, ANY HELP FROM THE GURU'S WOULD BE VERY APPRECIATED: THANKS ELMERFUD