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Why did we choose PMAGs?

This is a question we get asked quite a bit. It seems like some folks don’t particularly care for them, but we like them for quite a few reasons. It’s important to note that all of the reliability testing we’ve ever done on our guns has been shot with PMAGs, including the 7,500 rounds we shot at SHOT Show Range Day on Monday.

From a reliability perspective, we have never had an issue. The real reason we chose PMAGs is actually related to something else about the magazine that people often forget: a big part of the reliable function of a gun is consistent maintenance of your magazines. The PMAG is so simple to disassemble and reassemble so you can regularly clean your magazine. Most malfunctions with a gun start with a magazine issue, so regularly cleaning your mags, especially if they hit the ground, is really important.

The other reason that we like PMAGs is the basepad size. If you run into a malfunction, sometimes the magazine can be difficult to remove, but a PMAG has a nice big, serrated basepad so you can get a good grip to pull it out. This is especially helpful if you have the optional magwell installed and need to do an emergency magazine removal, as you’ll still get adequate purchase to remove the mag.

13 Replies to “Why did we choose PMAGs?”

  1. Doug Wilson says:

    Will stock Glock G19 mags work in the MR918??.

    1. JESSICA@SHADOWSYSTEMSCORP.COM says:

      Yes, they sure will

  2. The Air Force should be commended for using the Army’s existing test data rather than conducting a redundant test to make its decision. The question that remains unanswered is why didn’t the Army come to the same conclusion as the Air Force and choose the PMAG when it appears that the service’s own test data shows the PMAG as the top performer.

  3. Alex s says:

    What size mags fit on the MR920?

    1. Jessica Roe says:

      It will take any Glock mags.

      1. Tony says:

        Glock 19 mags?

      2. Jessica Roe says:

        yes

  4. Landon says:

    I’ve had many issues with multiple brand new pmags that will fall out of the gun as I shoot it. Any suggestions to fix this problem? This happens no matter how o grip the gun, so it’s not me accidentally pressing the Mag release. All of the mags will work perfect and reliably in a stock Glock 19 but have issues with the MR918.

    1. Jessica Roe says:

      Landon, That doesn’t sound normal. Can you please call or text our Technical Manager, Richie, so he can help get this resolved? His number is 469.343.6831

  5. Eric Nixon says:

    What Generation Glock 19 Magazines fit the MR920, Gen 4 or Gen 5?

    1. Jessica Roe says:

      The mags are the same between generations, so any. All 9mm Glock mags will work with the MR920

  6. Jonathan says:

    The magazine follower on my glock magazines does not engage the MR918 slide stop when the last round is fired, and the slide locks back into battery. This only occurs when firing, not when operating the slide manually. The glock mag follower recess for the slide stop lever just barely misses the lever. Is there anything that I can do? I like the round indicators on glock mags, and have a lot of them.

    1. Jessica Roe says:

      Hi Jonathan, occasionally the high firing grip that the MR918 enables causes shooters to inadvertently hold the slide release down, typically with their left hand if they are a right handed shooter. Have you tried firing the gun one handed to confirm this is not the issue? It doesn’t make sense to us that it would lock back manually, but not during live fire. Also, can you confirm how old your Glock mags are? We have seen that when the springs are old, they don’t push the follower fully into position. Does this issue happen with PMAGs that came with the gun? Please feel free to call our tech support, if that’s easier for you, so we can troubleshoot this issue: 469.458.6808

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