Something to consider, how good are you eyes? Have an 03 and an A3 and while I can do well with the A3 shooting the 03 is very difficult due to the sights. I can only assume the Doughboys were all young and had good eyes; I on the other hand am in my late 60's and at 100 yards find the 03 sights almost impossible to use. The A3 likes the NOE version of the 311291 backed by either 13 grains of Red Dot or 16 grains of Blue Dot.