Mean Arm's Endomag 9mm 30 Round Pmag Conversion Kit

These mag inserts are easy to use, easy to install and after 600 rounds, are still going strong!

I bought 3 of these kits and converted some 'new' 556 Pmags to 30rd 9mm mags for use in an AR15 lower with a 16" 9mm upper. simple to install and easy to remove. just follow the online video. my 'new' Pmags were dragging on the 9mm bolt. my 'used' Pmags ran good. so, after adding some wear to the new mag feed lips with a small file, they run fine now. several hundred rounds on one already. makes a great alternative to my dedicated AR9 lowers.

Installed easily, but the first round inserted has no spring tension to retain it. Subsequent rounds normal. Would not eject until I cut some excess plastic from the front of the ejector. Does not hold the bolt open on mine.

One of My 9mm BCG's would not work with the EndoMag that BCG would only work in my AR-9's the back of the AR-15 mag was not clearing the BGC, ground the slots back about 3/8 of and Inch - on the BCG - all is well - So it is possible to have a 9mm BCG that won't work with the Endomag

Works flawlessly in my frankin9. I love these and I hope they can engineer future similar products for other calibers as well.

I have 2 of these and looking to get a few more. They work great. A few things, buy Gen 2 mags the have a lip on the back of the mag that holds it tighter to the mag and allows for less movement. Two cycle them with some rounds safely to expose excess plastic then remove it. Helps if your lower is good quality like spikes or AP tight magwells work well. I can hold mine from the Mag with no issues. brass rounds 100 first rounds of steel had some issues once broken in it runs everything now.

Follow instructions on video! These work great! Have used on 3 different 9's and they work. Easily convert back to regular mag if needed. Holds bolt open on last shot on mine. Sweet!

This is a ingenious idea that now seems like it should have been thought of years ago. I'm glad its here now tho. It has a few benefits that I think are g great. You can use any of your AR lowers marked multi and put a 9mm upper on it. Since it uses 30rd Pmags I can use my plate carrier AR mag pouches. It's easy to change the mag back to a 5.56 in 10 seconds. It's just a great idea and I'm extremely happy I now have some