Home CMMG Stern Defense 9mm AD-9 Conversion

Stern Defense 9mm AD-9 Conversion

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29 COMMENTS

  1. I'm not clear on something. I have a Stern conversion unit I run in various lowers I've built, and a toolbag full of Glock 31/KCI 33 round mags, and a smattering of Glock 17 pistol mags. I thought it would run ONLY mags for the Glock. Am I also able to stick Sig, S&W, another mags as well? If so, then I'm really in pig heaven! One thing that was not included in the video and should be added. DO NOT ATTEMPT TO CLOSE THE BOLT WITH THE RELEASE BUTTON WHEN AN EMPTY MAGAZINE IS IN THE MAG WELL. It will damage the Stern unit — if you're strong enough to press the lever. If you feel the need to use the bolt release lever to close the action, just don't do it with an empty magazine in place!

  2. How is the Griffin Revolution 9? Also how was the can mounted to the barrel (DT, 3 lug, etc)? Looking for my first can for a build using the Stern Defense adapter and I'm digging this one!

  3. So, that's not a binary trigger and I see the selector lever switched to full auto. What exactly is going on there to make that thing fire so fast and how is it legal? I was under the impression that full auto was banned to civilians in 1986 for anything but pre-ban guns.

  4. @Iraqveteran8888
    Why at the beginning of the video didn't the bolt lock back on the last round? And why after you locked it back did the bolt go forward when you had it leaning or on top of the table?

  5. Will any mag work in the Glock adapter? I am failure to eject and double feeds. I have a 9 mm buffer set up as well. I have tried Fioochi 115gr and Brazer 115gr. Any suggestions?

  6. beauty of this is how you can have one SBR stamp in nearly any caliber you want. get one stamp on regular AR-15 Lower, then you can run .223, .300 BLK, or with the Stern adapters you can use 9mm, .40 or .45. really cool

  7. So I am looking to get a p365 and AR combo. I want to do an AR build that is chambered in 9mm. Is there anything I can do to make the p365 and the AR use the same bullet… an suggestions?

  8. It feels/looks like an AR but the manual of arms is different, not a fan. You can get a dedicated 9 lower from Spikes/PSA for less that has the same manual of arms…

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