Emod

http://www.vltor.com/product/emod-enhanced-modular-stock/

Or Battlelink?

http://www.missionfirsttactical.com/Products/Battlelink-stocks/BATTLELINK-Utility-Stock

It looks to me like the Battlelink has a smidgen more storage, and it also has the capability to add a Garmin Backtrack at a later date (great for those long hikes through bear country )

I've looked over the current Magpul offerings and have decided against their products for my SLR. I'll post pics this afternoon of the rifle as its currently configured.