I've only had early Saigas (22") barrel. I had to open the gas ports to .092, but I understand the later ones may be larger/or/ have 4 holes instead of the early guns 3 holes...... Another thing,remove one Saiga recoil spring, try a Colt 1911 spring (12/14#) in it's place. Yes, they take some work, polish the normal stuff, you won't have a fortune in it. Do the trigger conversion it's not that hard to do, (saiga.com). Tons of info