While we are still waiting for the regulations to be published, I can disclose that the state of California has purchased the DFM for inclusion in their new AW guide. The individual I spoke to mentioned that he believed the DFM to be an improvement over the FAB-10 from many years ago. He could have been employing subterfuge, but I have reason to believe that he was honest in his discussion.
It sucks that we have to resort to this sort of patented design, but the real benefit of the DFM is that it is easy to retrofit. Also when crossing out of CA, it is easy to remove the DFM and use a standard 30 round magazine from the bottom. Lastly, we have recently decided that we are going to fund $2 our of every DFM sale to finance litigation in CA. Details on this will be provided in the near future after we discuss things with the accountants and lawyers.