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CMMG 22LR Mk4 Barrel Kits w/ Collar
$224.95 $184.49 Save 18%
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Most Helpful Positive Review CMMG 22LR Mk4 Barrel Kit with Collar
Using this for a 22LR build, barrel and collar are as advertised. Got barrel and collar for a great price at Optics Planet. I am using Spike's Tactical for the rest of the 22LR conversion which works fine with the CMMG barrel and collar.
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Dedicated AR22

by Deepark, Verified Owner from TX, United States Written on February 15, 2025
Decided to put a dedicated 22 to go with the other AR's. Turned out to be a nice little tack-driver.
Would recommend: Yes
Was it helpful to you? Yes | No

Rename It to Malfunction Trainer

by Nice Handguard, Verified Owner from IA, United States Written on September 12, 2024
The only way I can recommend this to you is if you are looking for a malfunction simulator. If you want to clear failures every other, or even every round, then this is for you!!
Would recommend: No
0 of 1 found the following review helpful.
Was it helpful to you? Yes | No

great barrel for ar22

by Jimmy Dominguez, Verified Owner from FL, United States Written on December 16, 2023
this solid little barrel is the perfect size for my compact ar22. nice snug fit and shoots true. shipping was really fast too
Pros:
  • compact length, solid barrel
Cons:
  • None
Best Used for:
  • plinking
Would recommend: Yes
Was it helpful to you? Yes | No

A true dedicated, accurate & reliable 22lr barrel

by KenC, Verified Owner from NV, United States Written on June 13, 2022
I was skeptical at first, how it might not be as reliable and accurate since it’s only 9” long barrel. But I proved myself wrong, not only it ran flawlessly with all types of 22lr ammo that you can think of. Shot very accurate, close to a little over an inch & 1/2 grouping. It even ate up the 22lr golden bullet bucket o’bullets. I am very satisfied with this purchase and now I am even thinking of building a dedicated 16” barrel. Highly recommended two thumbs up ����
Pros:
  • Accurate barrel
  • Reliability and quality
Cons:
  • None for me
Best Used for:
  • Plincking, Self Defense
Would recommend: Yes
2 of 2 found the following review helpful.
Was it helpful to you? Yes | No

AWESOMENESS IN SMALL PACKAGE

by Sam, Verified Owner from TX, United States Written on June 29, 2020
I already had a cmmg .22 kit conversion kit for my ar but wanted a dedicated option and found this. I built a new upper specificly for .22 and this thing works perfectly. comes with collar and you use your existing .22 bolt and works flawlessly.
Would recommend: Yes
1 of 1 found the following review helpful.
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Ar 22 Conversion

by ProGun2nd, from NE, United States Written on June 2, 2018
Used it to build a 22 dedicated AR. I already had the Cmmg 22 conversion kit for a 5.56. Had no issues using it with this barrel. I have cycled about 500 round through it without any feed issues. Had a few rounds that didn’t fire but had a good primer strike. I blame that on the cheap box ammo.
Would recommend: Yes
5 of 5 found the following review helpful.
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Polishing needed

by Aramfan2, from MO, United States Written on August 7, 2017
Some reliability issues up front. Polished feed ramp and chamber. That got Federal ammo running 100%. The mags in ar's rock forward and back a bit, found out by rocking the mag forward, shoots any ammo 100%, rem, win, cci, etc. (I have 4 mags, dif mfr, all the same) currently using a wood wedge at the back, but will JB two mags. Running a Cosmic suppressor on it. Very, very accurate. Was worth the fiddling.
Would recommend: Yes
Was it helpful to you? Yes | No

Perfect parts for a dedicateed 22lr AR15 build

by Dave E, from TX, United States Written on April 21, 2016
I purchased this for short barreled dedicated 22lr built. Installed quickly and works flawlessly. Free shipping a bit slow but arrived undamaged. Optics Planet had the best price. I would buy it again.
Pros:
  • Great quality.
  • good Price.
Cons:
  • None
Best Used for:
  • Targets, hunting, training
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No
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