Well, I have the KAC EM Carbine on order. So now I’m figuring out the logistics of actually holding the magazines.
I normally rock Eagle FB Kydex insert molle pouches. Is there some sort of 7.62 equivalent that would do the job?
I may have to even go to Raven and see about them producing a larger pouch to fit the need.
US Grunt Gear has some FAL pouches that might work. They are stiff enough to stay open and yet secure the mag (at least the 5.56mm version do).
The HSGI Taco is also a good choice in that it works with all kinds of mags, including SR25, M4, and AK.
ATS and Tactical Tailor both make 7.62 pouches, but they rely on shock cord for retention.
Hope that helps.
We have a double SR25 pouch in our Ten Speed line up now. It is available direct or through our dealer network.
Stephen
I own and use Battle lab 762’s and like them. Also check out Mayflower as they offer 762 pouches.
Regards
Matthew
Check the ammo pouch spreadsheet in my signature. 
Tried a bunch of different types of 7.62 pouches over the years, but I always come back to the TT wedges.