Well, I have now put 1,000 rounds through my new 9mm shield. The magazine springs are loosening up to the point where I can load them without a loader if necessary. I have had two failures, both failures to extract with reloaded ammunition put together with range brass. I do not believe these were the gun's fault. The gun still shoots significantly low for me. I hope to fix that with a Hi-Viz front sight. I haven't checked the comparative heights of the two blades yet and may have to go to a plan B depending. IN the main however I am pleased with this pistol.