• Welcome to Oklahoma Shooters Association! Join today, registration is easy!

    You can register using your Google, Facebook, or Twitter account, just click here.
  • All members receive 3 free listings a month. Get unlimited listings for just $10 a year! Click here for all the info.

CMMG 22LR Conversion Kit

Seadog

Sharpshooter
Joined
Sep 22, 2009
Messages
2,890
Reaction score
1,643
Location
Boondocks
When running the 22LR conversion bolt and mags in an AR, does the gas tube length matter? Can it reliably function with a mid or rifle length?

Thank you
Like others mentioned it is straight blow back. The little bit of gas that comes back in the tube just blows right into the upper receiver because you’re 22 conversion has no gas key on it like a regular bolt carrier does. So The gas tube length doesn’t matter. Being blow back it would work without one a matter what.
 
Last edited:

MilitantBEEMER

Sharpshooter
Special Hen Supporter
Joined
Mar 9, 2019
Messages
1,509
Reaction score
2,105
Location
Tulsa Oklahoma
Like others mentioned it is straight blow back. The little bit of gas that comes back in the tube just blows right into the chamber because you’re 22 conversion has no gas key on it like a regular bolt carrier does. So The gas tube length doesn’t matter. Being blow back it would work without one a matter what.
Makes sense. Just like a 9mm AR. Thanks for the information fellas
 

rlongnt

Sharpshooter
Supporter
Joined
May 16, 2006
Messages
4,076
Reaction score
2,369
Location
Edmond
Others have answered your question but one thing I'd add. I can tell you for sure one thing that will make them have stoppages is the design of the hammer in your AR. The one on the left with the notch might hang every few rounds and the one on the right will run fine. Both of my Colt LE6920s came with the one on the left. I'd already replaced one with a QMS which ran fine but the other choked. After some research I found out this was common with that style hammer. When I put the same style QMS trigger group in the other rifle the CMMG kit ran fine in it too. YMMV

Hammer.jpg
 
Top Bottom