We now have a spacer that allows you to run the .22 Conversion Kit with your Br4 lower. Starting in Dec. 2024 these will ship with all 5.56 chambered Br4s. If you purchased one prior to this, please contact our Customer Service team to request one to be sent to you.
Go to to sign up to be a CMMG Insider, and you can click the home page icon to take you to our website.
Check out our Instagram
Give us a shout on Twitter
Cool video
I love running my CMMG 22 lr conversion in my BR 4. I prefer to turn my gas block off prevent gas blowback to the rear of the rifle. However, my BR 4 rifle didn’t come with the adapters for my 22lr conversion kit. When I reached out to CMMG they provided a link to their website where I had to purchase those components for my conversion kit to work in my BR 4. Wish it would’ve came with my rifle at that time I purchased it and saved about $35.00. I’m glad CMMG has come out with this instructional video on the conversion for the BR 4. Very helpful. Didn’t have it when I was installing mine.
Ok Boomer!
That super cool, i was actually worried that this wouldnt be possibe
These things run great with .22 LR. I had a very old CMMG conversion kit that didn't work, but after buying a newer version, it runs excellent.
Thanks Mike. Glad to see you on DLD After Dark last night. Glad to see the follow through with the .22lr conversation kit. Some companies would say here's the product good luck. Love CMMG!!!!
22 conversion in my AR 15 with binary trigger 😃 now that's fun 👍🏻
I clicked on the video on YouTube. 💪🏻