I have a CMMG Mk47 Mutant that's a cross between the AR10 and AR15 that uses AK magazines. I'm actually quite surprised at how good it shoots. 2" at 100yds with cheap Brown Bear ammo and an EoTech with 3x magnifier. Granted that isn't bench gun accuracy but cheap ammo and low powered optics I was impressed.

I'm selling it because I don't need it with already having a 300BO and a Scar17 in 308, the 7.62x39 fits right between them and doesn't fit my needs.