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Has anyone used or give any feedback on the CMMG .22 conversion kit. I am looking to add one to either a M400 Tread or a Tread Pistol.
 
Posts: 8 | Registered: July 01, 2020Reply With QuoteReport This Post
Go ahead punk, make my day
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I had one years ago, worked well but the twist rate from an AR isn't optimal so the rounds impact about 2 inches low at 25 yards.

Over time I sold it and moved to a dedicated M&P-15/22 setup for an "AR 22LR" platform.
 
Posts: 45784 | Registered: July 12, 2008Reply With QuoteReport This Post
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are we talking the insert kit or an upper conversion kit, they make both. The latter is completely reliable. The former is not.


“So in war, the way is to avoid what is strong, and strike at what is weak.”
 
Posts: 8819 | Registered: October 14, 2004Reply With QuoteReport This Post
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quote:
Originally posted by hrcjon:
are we talking the insert kit or an upper conversion kit, they make both. The latter is completely reliable. The former is not.


I was referring to the bolt group kit. Not the complete upper. If you are saying the complete upper is better, I will look into that. Thank you.
 
Posts: 8 | Registered: July 01, 2020Reply With QuoteReport This Post
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The upper is totally mint. I have several and a zillion rounds experience. The bolt conversion insert is a bit more problematic. Depending on your goals the difference may/may not be something That matters since there is also a material price difference.


“So in war, the way is to avoid what is strong, and strike at what is weak.”
 
Posts: 8819 | Registered: October 14, 2004Reply With QuoteReport This Post
Alienator
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I have the conversion kit and it's great to plink with. I may end up making a dedicated 22 upper later but it's nice to have regardless.


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Psalm 118:24 "This is the day which the Lord hath made; we will rejoice and be glad in it"
 
Posts: 5745 | Location: NC | Registered: March 16, 2012Reply With QuoteReport This Post
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Love my stainless CMMG conversion kit. Works great in all ARs I’ve tried.


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My hovercraft is full of eels.
 
Posts: 2453 | Registered: February 27, 2013Reply With QuoteReport This Post
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I also have the conversion kit. Works great and is lots of fun. Also a AR equipped with the 22 Long Rifle conversion kit exempts the rifle from the California assault weapon ban.
 
Posts: 177 | Registered: January 11, 2018Reply With QuoteReport This Post
Not as lean, not as mean,
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quote:
Originally posted by RHINOWSO:
I had one years ago, worked well but the twist rate from an AR isn't optimal so the rounds impact about 2 inches low at 25 yards.

Over time I sold it and moved to a dedicated M&P-15/22 setup for an "AR 22LR" platform.


I have both (conversion bolt and dedicated CMMG upper). I can hit the 8" steel gong at 25yds with the conversion bolt, but anything further out I have to use the dedicated upper for the increased accuracy.
The other thing I do is I always shoot a few 5.56 out of the regular bolt when I'm done using the conversion kit. I've seen people get their gas tube leaded up from .22lr rounds and have issues when converting back. So I shoot a few 5.56 when done to keep the gas tube clear.

I have used both with my Franklin Armory BFS3 triggers and they work great.

In short, if you just want a short range plinker for trigger time, get the conversion kit. If you want a .22lr AR, get a dedicated upper.




I shall respect you until you open your mouth, from that point on, you must earn it yourself.
 
Posts: 2679 | Location: Southern Maine | Registered: February 10, 2008Reply With QuoteReport This Post
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I bought a CMMG upper for my M16, it took a bit of playing with it to get it reliable-ish with 22LR but in semi it never missed a beat.

https://www.youtube.com/watch?v=70PCPLmdeMk

I've also got one of their 22 bolt conversions, it pretty reliable but as mentioned above the bullet twist leaves something to be desired ... unless you can find an old skinny 1/12 twist, but IIRC the 22LR bullet diameter is slightly smaller than the traditional .223/5.56

The only down side to the CMMG upper, at the time I bought mine, you could buy a complete mid-tier AR, it was around $600, with the fullauto conversion ... this was when you could buy a "COLT" AR-22 for around $350.


If you really want something you'll find a way ...
... if you don't you'll find an excuse.

I'm really not a "kid" anymore ... but I haven't grown up yet either Wink
 
Posts: 5271 | Registered: January 11, 2007Reply With QuoteReport This Post
Dinosaur
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Looks to be based on the old M261. Bought one of those new in the tube in the late 80’s and it worked well in semi. Never tried it in auto. I should dig it out and play with it again sometime. Apparently it was a good investment, considering what they’re going for now.
 
Posts: 6535 | Location: Maui | Registered: December 15, 1999Reply With QuoteReport This Post
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A .22LR AR is one of the things on my "someday" list. I friend of mine has a conversion kit and it works great for him. Reliability has been great and accuracy is "good enough" for what he and his 12-yo son use it for (mainly blasting 8" or so steel targets in the 15-20 yard range. That said, when I get around to getting mine I'm planning on a dedicated .22 upper.
 
Posts: 5996 | Location: Portland, OR | Registered: February 12, 2007Reply With QuoteReport This Post
I'd rather be hated for who I am than loved for who I am not
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I like mine. never had any problems with mine. it shoots federal fine. But I often used mini mags.

Also it is good to shoot some 223 through it to blow out the residue from the 22's occasionally.

primary has a good price on tehm but they are currently out

https://www.primaryarms.com/cm...3-25-round-magazines
 
Posts: 7153 | Location: Bismarck ND | Registered: February 19, 2003Reply With QuoteReport This Post
"The deals you miss don’t hurt you”-B.D. Raney Sr.
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Back when I was thinking I’d have one or two lowers, and several uppers w/ different calibers, jobs, etc. , I had two. I never had any issues with either of them, in several different rifles.
But, once I bought an M&P22, I stopped using them.
One got sold, the other would be if interest was shown.
A dedicated .22 does work better.
 
Posts: 5895 | Location: East Texas | Registered: February 20, 2008Reply With QuoteReport This Post
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This conversion kit gave me nothing but jams so I returned it.

https://www.brownells.com/rifl...7.aspx?sku=100010627

I found a great deal ($300 w/free shipping from CDNN) on a Colt Walther M4 which now has 200 flawless rounds through it.

https://www.brownells.com/fire...FF_22%2bLong%2bRifle
 
Posts: 14551 | Location: Eastern Iowa | Registered: May 21, 2000Reply With QuoteReport This Post
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