All of a sudden the ambi mag release on my G21sf is sticking, and bad. Took it out, wiped it down & still the same issue. Cut the weak side protrusion off, lightly polished the the entire safety, same problem. I remember reading about the issue a while back can't find any remedy. I'm thinking poor design, any insight appreciated. Would glock issue me a different frame ? this is now a paperweight. Thanks ETA : From what I read Glock will replace the frame w/ a std. mag. release version. ETA#2 : Good catch Njanear got my head in the AR, can't edit the title soooooo I'm a dork LOL !