You know even thought is does appear to have a fair amount of recoil, it makes it that much more fun to shoot. More like a more powerful MG than a something that shoots the small 7.62x39 cartridge. That's one reason why I built it, that big gun feel with out the higher cost of 7.62x51 or 8mm ammo plus to see if I could really make a beltfeed out of AK parts.
Next project, is make a beltfeed FAL. And yes, the receiver side rails will have to be reinforced but when you start with a rough casting I can modify it as required to make it strong enough. As a Mechanical engineer, I can and will calculate the receiver side rail stresses and beef it up as required.