My SAR's bolt will stay to the rear, until the wind blows and it slams forward. My Hungarian stays open pretty well, but it doesn't take much for it to fly forward either. I would not rely on this method as a safety feature. It is not a design feature of the weapon, merely a display of friction. I also use a piece of brass to hold it open, there is always a .308 case lying around at the range, I have never had a problem when using this method, it works well for pistols (or any other gun)that does not have a hold open feature. I have heard rumors of some hungarian mags that had a bolt hold open feature on them, but I have never seen them, nor do I have any idea how they work. I at one time contemplated taking the dremel to the safety lever and making a notch, but I got concerned that the lever is made of pretty flimsy sheet metal, and assume that before long it would get deformed by the pressure of the bolt resting on the notch, fo I decided to stick with the random piece of brass bit. If any body knows of a way to add a reliable bolt hold open to the AK I would love to know about it, and if anybody can attest to the notched safety lever not getting bent up by repeated use I may have to rethink it.