I have 3 or 4 of them, and they all work fine. I had to modify the plastic bases a bit to fit my ATI stock and also squeeze the lips in a bit. Over the past year I've used them about a dozen times each with very little problem. One or two had to be re-squeezed.
If you enjoyed reading about "Hi-Point 9mm carbine magazines" here in TheHighRoad.org archive, you'll LOVE our community. Come join TheHighRoad.org today for the full version!