Works as expected, would recommend - Stern Defense MAG-AD9 AR-15 Glock 9mm/.40 Magazine Conversion Adapter

I wanted to build a 9mm AR and had a few mil spec lowers laying around, so I decided to get this instead of a dedicated AR-9 lower. It was easy to install as long as you follow the easy instructions. I had no issues with it at the range the other day. I used both Glock mags and Magpul mags for a Glock 19, and had no issues of any kind. They was little to no mag wiggle when seated and they ejected cleanly when empty. It fed great using Remington range ammo and the LRHO worked every time. The only issue at all, if I had to find one, and this is just a muscle memory issue for me, is the ejection lever will take some time to get used to. I knew this when I bought it, and like any new gun it will just take rounds down range to get used to.