I am wanting to purchase 10 para magazines for my P-14 limited. Has anyone tried the PSI ACT-Mag? I'm wondering if these function like my factory magazines. They are considerably lower in price than factory magazines. There is also Pro mag brand for around the same price. I'm needing some if these are a bad idea. I have 5 para magazines now that work flawlessly. I'm needing some for practice. Thanks for any info.