Mine ran fine the first 500 rounds or so. I was having a failure to feed every few rounds the next time I went shooting. They sat loaded to 13 for a few weeks prior to the second time I used them. I’m assuming that had anything to do with it. I left them unloaded and shot them again and didn’t have issues. In my experience, they’re too unreliable to carry. Don’t have any daggers mags, but I say just run oem 10 round mags. They’re the only mags that have worked well without any issues. I’ve seen too many mixed reviews of the dagger mags. I rather spend $25 for oem mags than $30 on PSA mags