Know thy Banana: GI M16 magazines through the years (VIDEO)

Black rifle expert Chris Bartocci convenes class on the evolutionary process of GI 30-round M16 magazines from Vietnam to today.

Going back to the old black-follower mags and moving through the new blue-follower EP mag, touching on everything in between, Bartocci breaks down the reason for changes to the feedlip angles and the body itself, and points at the ammuniton-based reasons for each.

It’s a scholarly look and you don’t get any wackiness or Tannerite explosions in the 17 minute clip, but if you are curious about the what, when and why there are so many GI mags and followers out there, this is worth your time.