Also I read something about Siagas not accepting double stack mil spec magazines? This isn't true is it? I even saw a guy on youtube had filed his mag release a bit. What is that all about?
They accept double stacks fine, however, in order to use surplus steel or other non-Saiga AK mags you have to add a bullet guide in order to chamber a round. The Saiga specific mags are different than regular AK mags and do this by design. It's a pretty simple process to install a bullet guide....costs about $20 (if you don't make one yourself) and takes about 20-30 minutes to drill and tap the hole. The below link shows you the steps.