Springfield Armory used both a double bevel and single bevel follower arm. Both had small bevels as shown
on the single bevel arm above. The double bevel arm had the drawing number B8869 stamped into the metal on one side.
The first single bevels also had this drawing number stamped into the metal into early 1940 production. Later versions
lacked the drawing number.
Winchester used the single bevel follower arm throughout their production. The most easlily recognizable
characteristic being the large bevel on one size. The ledge, flat area on the top edge between the pins and the bevel,
was very narrow during early production. This ledge got larger during the six digit production. Late production
Winchester single bevel arms were stamped into the metal with a 6 or 9.