Large Cal AR15 ProMag follower

Large Cal AR15 ProMag follower

thingiverse

This follower is for the Promag steel 5 and 10 round AR15 mags (the ones with the 20rd bodies), to turn them into large caliber (.450 Bushmaster, .50 Beowulf) AR15 cartridges. Will hold 8 rounds of .450 Bushmaster, most likely 7 rounds of .50 Beowulf.

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