|Bought 6 mags and had a hard time in the wood stocks of my Yugo and my Chinese, but did some work on the stock on the Yugo and worked great. I changed the stock on the Chinese to an ATI stock and had no problems at all. bolt latched back just fine on both guns. No feed problems with either gun, I did buy some Pmags as well and they fit even better, but can't bitch about the Promags. one thing I learned is you can't use stripper clips to reload these mags, broke the feed lips off the first one, I Recommend not to try that. good and fast serves!