There was one OEM selling on the forum for a cool $1k. The KRG is currently the closest aftermarket you can buy. It is very well made and is lighter than the OEM. You can also get a folding version (the OEM is fixed). The other major difference is that the aftermarkets have an aluminum base plate, and the OEM has a polymer plate. The polymer is designed to absorb the force of the SCAR's very heavy BCG. So, if you do go with an aftermarket stock you are advised to make a few modifications to your 17s including a softer buffer pad and beefier rear receiver screws.