won't run is too harsh sounding for my problem. it fails to return to battery every now and then, so unreliable for carry is better. they all let some get by. i had a glock that wasn't right at first, too. i'll get it fixed sooner or later. and i'll say this. it has the best stock, $700 trigger i've ever felt and is a very accurate gun. i'd try another one. for every 1 that's a little out of whack like mine, there's a 1000 that run perfect. i just got unlucky.