Easy, the milled follower is for a 1903, the 1903 springs are M shaped, the stamped follower (for the A3s) will use the W shaped spring. Still confused, both ends of the 1903 spring will be almost parallel to eachother. On another note, the 1917 springs are almost identical in shape of the 1903 spring.
A forum community dedicated to hunters and enthusiasts. Come join the discussion about optics, trails, clubs, gunsmithing, styles, reviews, accessories, classifieds, and more. The friendliest gun forum on the Internet!