STERN DEFENSE, LLC - AR-15 9MM CONVERSION ADAPTER

It has worked well so far. I have used it on 2 different rifles so far. I haven’t needed to use the set screws but will keep the unit from falling out if you hit the mag release out of muscle memory.

I have used three of these conversions in my AR 15s. feeds well worked with three different receivers. had one hiccup with ETS mags not fully locking in place, made a slight adjustment with the adapter position and they work fine. Would recommend. work with ETS and OEM Glock mags just fine.

A very well built product, sold at a great price and shipped out quickly. You can't ask for more than that. It works perfectly.

Installed easily and runs great! Zero malfunctions in over 2k rounds of ammunition. Ammunition ranges from light target loads, nato 9mm and various carry hollow points

I'm the picture you see in the dictionary when you look up "pessimist." I'd seen a couple of these in use at the club I belong to, and was fairly impressed. After getting an up close look, the materials and quality of construction struck me as being very good. I had long been considering milling out yet another AR lower, this one just for the 9mm, but from what I'd seen, I wouldn't get a last-round hold-open feature, and that was a deal buster for me, even though it's not that big a deal. Lots of guns don't have it. Since I already had two complete lower assemblies on hand, and no uppers for them, I took the plunge and ordered this one. Brownell's blew me away by how fast they delivered it, along with a Glock-compatible 9mm bolt. Simple and foolproof to install, I headed to the range, thinking I might've made a mistake. It's been two weeks, nine range trips, and 3,200 rounds later, it's performed flawlessly. No discernible wear or tear, even though I was worried about that due to the thin, seemingly fragile bolt hold-open lever. No, sir. That part is rugged and durable. I even applied pressure on the magazines at time, trying to see if I could induce a malfunction. Not a bobble, not one hiccup. And the beauty is, I can pop the unit out, and have it ready in seconds for the .223/5.56, .300 BLK, 6.5mm Grendel, or any other upper I already have. This was money very well spent, and not only am I planning to buy another one in 9mm, I'm thinking of getting a .45 ACP unit as well!