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It just works! - Stern Defense MAG-AD9 AR-15 Glock 9mm/.40 Magazine Conversion Adapter
by
Erwin,
Verified Owner
from OR, United States
Written on February 21, 2025
I bought this for my first AR-9 build since I had a couple spare lowers and didn’t want to spend money on a dedicated 9mm lower. I did also order Stern’s Glock compatible bolt just to be on the safe side.
I have had it in and out of a receiver two or three times with zero variance in performance. I have perhaps 250 rounds using this adapter and have had zero misfeeds or malfunctions.
I decided to leave mine in its own receiver and installed a bullet button as an extra lock to prevent accidentally pressing the traditional mag release. I actually like the location of the mag release on the adapter since it is literally straight forward of the trigger guard.
Would Recommend:
Yes
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