Surefire 60 round and 300 Blk

Discussion in 'Firearm Accessories & Gear' started by GREGULON, May 3, 2013.

  1. GREGULON

    GREGULON New Member

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    So I have a couple of 40 round mags and loaded one with 300 Blk and it wouldn't seat. Never had that happen with USGI or Pmag. So I have a Surefire 60 on the way and I am wondering if anyone else has tried 300 Blk in a Surefire mag?