Short history and specifications of the M16 family (M16A1, M16A2, M4, and M4A1).
Check out the two firing speeds of the M1918A2 Browning Automatic Rifle (BAR)
Here are the instructions on how to modify your BAR magazine to use 30-06 short blanks.
- J&M Spec. Short Blank Magazine Spacer
- M14 / M1A magazine follower
- M14 / M1A magazine spring
Step 1 – Remove the floorplate from your BAR magazine and extract the spring and follower.
Step 2 – Gently bend the three tabs on the bottom front of the magazine straight. This is best done with toothless pliers or a crescent wrench to avoid marring the tabs.
Step 3 – Install the spacer into the front of the magazine.
Step 4 – Modify M14 / M1A follower to fit freely in the remaining space of the mag well. It doesn’t require a lot of excess space. Just enough for it to slide freely top to bottom when kept perpendicular to the magazine.
Step 5 – Install the modified follower and the M14 / M1A spring.
Step 6 – Reinstall the floorplate and insure that the follower travels freely.
Step 7 – Carefully bend the tabs back flush. Magazine complete!
***If the magazine does not hold all twenty rounds then you can remove part of, but not all of, the lower vertical portion of the follower to increase the capacity.