Well, here's my 2 cents . . .
I have a Hesse/Saiga/Izhmash AK 47 (7.62 caliber). Feed ramp was added, so any standard 30 round mag will work. I have read that some of the Hesse rifles are "welded" together, but my is riveted together. And, it also has a chrome-lined gas block, something I had not seen before. Muzzle brake was welded to the front sight base, and welds are very well done. Finish was not the best, so sprayed it with Aluma-Hyde II ( have had very good luck with Aluma-Hyde II in the past). This rifle has burned up a BUNCH of ammo in the last year, and never any problems. Installed a MoJo rear sight a month or so ago, and am very happy with that too. After seeing the "failure rate" of the 5.56 round at the local steel plate shoot, will use this rifle next year for the shoots. Hope this helps ! !