Blue Force Gear made this sling for AK with Larry Vickers. This can be thought of as Vickers Combat Application sling for AK. This is a limited run of 500 slings.
http://youtu.be/kgvKp5A3WGI
You can purchase from Blue Froce Gear
https://www.blueforcegear.com/limited-edition-ak-sling
Price is $64
From: Blue Force Gear, Vickers Tactical