Hunter from United States, FL Public Profile

Purchase the 5 round and 10 round mag and both work really well, over 500 rounds now with no issues.

The only down side is that both mag's are the same size and neither have any markings to indicate 5 or 10 round.

Purchase this adapter for my AR 9 build. Had issues with jamming if I put more than 3 rounds( didn't matter if flat or round nose) in the mag. Re-installed the adapter three times and had the same result every time. Called Stern Defense left message and though well that was a waste of time, but to my surprise with in 15 minutes had a return call from Stern. The tech ask me a few questions and then ask me to send some pictures of my upper from inside and outside, also needed to include pictures of lower with adapter installed. The tech said they would call me back in an hour or so, I agreed.

I looked inside of the upper and saw some brass marking on the feed ramp and said dam, took the barrel off the upper, got my hand grander opened up the feed ramp, reinstalled the barrel loaded 17 rounds in the mag, fired 1,2,3,4, to 17 with no issues.

Went back into my house and found a message for Stern Defense telling me to take a look at the feed ramp. Called them and said yes I saw the same thing and fixed the issue.

I have now shoot over 1000 rounds with no issues.

Stern Defense is the way to going if you can't afford a 9MM lower.

Ok purchased this by mistake, did not want a dovetail mount. They said it would work on a shot gun so I tried it and to my surprise it held zero for more that 200 rounds of number 4 12 Ga rounds. Would have wasted more shells, but my shoulder said no more. If it held up this long without loosing zero I don't expect it to loose zero at all.

FedEx delievered this trigger about4:30PM installed it and at 4:55 target was setup and 20 mag's of 5.56 ready to go. 5:45 600 rounds down range and not one misfire. This trigger is great. I used 3 uppers, Smith & Wessen sport 2, Ruger AR556, and DPMS. Had to use the carrier from Smith & Wessen as the Ruger carrier was not an M16 carrier.

Easy to install, and well written instruction.

If you can not afford a full auto rifle then this is the trigger for you. Even if you have a M16 get this trigger it is just as fast and you don't need to carry the tax stamp with you to the range.