Not all that new, but the gen 2 has been out for a while now and it has had some pretty positive reviews on various forums and YouTube so I decided I would give it a try with my coupling method. In the past I have used a jb mix with an epoxy grit layer on top of all three ribs, that method was kinda permanent and you couldn't disassemble the mags for maintenance. So I did away with the jb and use this 3m industrial rubberized grit tape, pretty awesome stuff. Under the middle rib tape are located the 8 spring rolls that hold the internal coupler in place and bond the 2 15rd cut downs. The overall length is about 1/2 inch bigger than a standard 30 round mag

 

This is the jb mix and epoxy grit version before duracoat

 

And this is the 3m grit tape version

 

 

 

 

Nice Work! Looks factory!