These are the Generation 2 Dragon Head Brakes that have been designed by Black Hole and Tactical Ammunition.  No release date or pricing yet but it will be soon.  These brakes are threaded for  1/2 and 5/8 threads and will be able to handle most of the AR chamberings.  The Gen 1's work extremely well and these, so I here , do the same. I'll be testing one shortly.
  
  I have been waiting for this revamp for several months and I am looking forward to getting one in action. 
Greg