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CMMG 22 LR Conversion Overview

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We have received allot of questions in regards to .22 LR conversion kits for the AR15 weapon system. This is a brief overview and will have a full comparison with a designated .22 LR Upper as this seems to be the most popular question.

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33 COMMENTS

  1. I have one and put around 700-800 rounds through it in a day. I bought 1000 rounds and shot the majority of it but I didnt count. Anyways I had about 4 malfunctions through the whole session. They seemed like extraction issues. While this is just a training gun so its not vitally important that it be reliable, its not quite as reliable as something like a 10/22. However in return you get much more familiarity with your rifle rather than shooting a 10/22 or something. These things are great IMO.

    edit: I forgot to mention it was in 20 degree weather

  2. Are there Brands of the .22LR which tend to not cycle through the AR-15 to .22LR conversion well?
     Based on your experience can you recommend some brands of .
    22LR  that you have used that work well?  thank you

  3. I don't particularly care for the mag that comes with it. The black dog drum mag has been pretty awesome, I only have only had issues when I run soft lead nose tipped .22lr since they can be deformed easily when you rapid fire.

  4. There is a link to the article that went along with this video where i address everything you are talking about. Not sure how you are able to tell if I put it in dry but that is not correct. I had conditioned it with FireClean the day prior. I am well aware that lubricant is needed for a firearm to function it's best 🙂

  5. I have a similar unit. I noticed you put that in there DRY. If you don;t lube the rails on the conversion of course it is going to jam! I use grease. Use anything just not dry! Also your hammer takes more of a pounding,. grease that too.

    Don't forget your gas tube will clog up IF you don;t clean it/fire a regular 5.56 round through every 250-500 rounds! I hose mine out with brake cleaner. then compressed air if i cant. Cleaning the BCG is a pain in the ass just for 1 shot.

  6. I have one & I can't fully load the mag. If I do the 1st round falls out under no tension, seems once I get past about 20 rounds the spring gets funky in the mag & I have issues, therefore I just load 20. I only have 1 mag & maybe my mag is bad but it seems to function with only 20 rounds loaded.

  7. If you do not clean it often yes. the diameter difference for the ammo is .002 so it is not a huge difference but can cause lead deposits in the barrel which you would want to make sure you clean. If you clean the barrel after a good day at the range I wouldn't suspect it would alter the lifespan of the barrel at all.

  8. I have the same kit, and I love mine. I have saved enough in ammo to pay for a half dozen of them at least. Also it runs almost flawlessly. Slick. Great review. Thanks.
    Donnie D

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