My first experience with the Palm mags was not good. I talked to a guy who helped make them. He talked them up pretty good. However, the follower kept hanging up, keeping it from firing. Dirty no doubt, but couldn't remove buttplate to clean, as there is no removable buttplate. Lost confidence in them and got rid of them afterward. Sticking with the Yugo steel mags, despite the fact they are rather heavy, but reliable nonetheless. Just my 2 cents...