Not all components were included, and a sloppy fit - Armaspec 90 Degree Full Throw Ambidextrous Safety Selector, Red, ARM111-RED

I can't say this is the case for all of them, but at least for mine - there were missing pieces in the package. Specifically the torx keys. I can manage that just fine, but the side-to-side fitment is just sloppy and has a minimum 1.5mm play side-to-side across multiple lowers.