Quote Originally Posted by Drache View Post
No from what is sounds is that if you load more than 5 rounds of .223/5.56 into the mag, that would be illegal.
I think you misunderstood it. The fact that you CAN load more than 5 rounds of 5.56 into the mags makes them prohib. Lone-wolf was correct. If you wanted to use this with a beowulf upper the mag would have to be pinned to 2-ish rounds.