Home CMMG Troubleshooting the CMMG 22LR conversion in an AR15, my findings and results...

Troubleshooting the CMMG 22LR conversion in an AR15, my findings and results on the backyard range

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CMMG makes a fine product, I however have had issues from time to time and wanted to get to the bottom of the jams. I have used Bore Buddy and BlackJack Buffer products looking for answers. My results were not because of their products. I found the loose fit of the mag in the magwell, changed the angle of how the bullet is picked up. Holding the mag forward while shooting prevented jams. I am working on something that will hold the mag in place so I can run and gun and not have to hold the mag.

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6 COMMENTS

  1. Question, I have new model CMMG22 Conversion kit and when I pulled trigger the 1st time, -click-I had to pull charging handle 3 times before it fired and rounds were getting hung up and I had to remove those. I tried a lot of different stuff to get it to shoot or cycle to rounds correctly but nothing worked. Now the buffer spring is the one I installed for my AR 15 5.56. I spoke with a guy at the gun range and he checked things out and came to conclusion that the buffer spring was to strong and that was the problem -he felt. Anyone agree or have any advice? When I would load a 10 round mag, the most rounds fired without failure was 3 !

  2. My first thought would be to put some electrical or Gorilla tape on the back of the mag forcing the mag forward. Although over time, the tape might get worn out. Did you ever find a good solution?

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