I have heard the Polish models have problems , I have both a factory built under folder , and a modified side folder , both are Yugo M70s with milled receivers . The under folder is new and only has had 2300 rounds through it , so far , no problems . Because of my light and red dot set up , the side folder , has to fold right , which makes it impossible to shoot in folded position . The problem with side folders is that because the ejection port on an AK is on the right , almost all the rail systems are left side mount . I have the Manticore triangle stock which is the lowest profile of what I have seen . The under folder is better suited for grab and go . Disadvantage is that you have to have the dust cover rail only , for it to fold up , if you want a red dot . If you dont care , and use iron sights , your golden .