Brownells - CMMG .22LR Conversion Kit

[cobrachoppergirl]

Do you still need the buffer tube when using a CMMG 22 bolt, or can you get rid of it?

[garettleigh]

hi brownells love your videos i have a STI ar15 1/8 twist im new to the ar15 will this work with my rifle I HAVE DOUBTS AND ALSO THE DEALER SAID DONT RUIN ur match barrel with a 22Lr round im a big fan of cci so response would be very much appreciated

[CaribouLou45]

@garettleigh Coming engineers in industry: The .22 round will not damage your gun any more than firing a 5.56 or .223. What will happen though is you're just not going to get really good accuracy. Reports seem to say 5-10 inches at 50 yards with a 1/7" twist. A 1/9" barrel is reported to yield 5 inch groupings, maybe a tad lower depending on ammo, at 50 yards.

Basically, if close and cheap shooting is all you care about, you should like this product. If you want accuracy, go with a .22 upper.

[CaribouLou45]

@CaribouLou45 *Coming from engineers...

[garettleigh]

@CaribouLou45 thanks mate im thinking upper now might trade in my 10/22 to help fund it thanks agin

[redrumredrum89]

will this work if you have a piston system??

[skrimisher08]

if i live in California, can i have a 27 round mag? I've heard different things from different people

[irangeles]

@skrimisher08 No, you can't

[skrimisher08]

@irangeles thanks



[ajohnson]

The .003 of an inch difference in bore diameter of a .223 and a .22 doesn't make a difference?

[911mykidsdead]

Brownells, I can find your other videos on gun sites but on yout tube i can not find "Checking the Headspace & Installing the Ejector" Have you up loaded it on youtube?

[armydude690]

would a 1:7 twist rate be good for optimal performance?

[easydoz1]

That guy needs to talk way louder. The gun action was screaming it needs oil. Man...

[ChristianEvolution]

Can this be bought in the state of California?

[15stag08]

i bought this and the backplate broke like snaped so how do i go about return it to brownells?

[0122358]

would this work with an Olympic arms CAR-15 16"bbl 1x9 twist?

[nowthisisstupid]

Sounds really awesome, but how do you think it would perform with CMMG's 1/7 inch twist. Being as most .22 is light ammo?

[THEKINGOFMETROPOLIS]

@nowthisisstupid 1/7 twist is gonna be way to fast a spin for a 22 unfortunately

[kamoplads]

very interested in this product but im in the philippines. anyone out there have experience shipping this product outside the US? the m4 im planning to install this kit to does have a full auto capability, will it work? or do just use it in semi when the kit is in? the m4's make is norinco (chinese) similar to the ones used by our military and police if that helps. any thought would be greatly appreciated.

[cdj8825]

How do you take the bolt apart for cleaning?

[sos123321]

im thinking about buying this kit but i have many questions 1st is it a real cmmg unit ? 2nd the ad says brownell mags. are they blackdog mag or what? third will it work in the ar15 pistol(bmaster) and how reliable is this unit . any info would be great. thanks

[bazengao]

and the barrel?? doens't it has to be changed too?

[snakeii0]

@bazengao

Watch the video...

[bazengao]

@snakeii0 he didnt touch the barrel so, i soppused that its not needed...

[opmike343]

.22 will fire out of .222/5.56 barrels just fine. However, it won't be as accurate as a dedicated .22LR upper. The barrel diameter isn't EXACTLY the same, and the rate of twist will be all wrong. Still, it's a decent comprise of plinking. Just don't expect match accuracy or anything if you keep the original barrel.

[Antiworld23]

Will this work with a Stag Arms AR-15 lefty upper?

[devdawgez55]

@Antiworld23

thats a great question...i was just going to ask the same thing...if you ever find out let me know and ill do the same :)

[15stag08]

nope

[brownellsinc]

No, this wont work with a left hand model of AR-15. It ejects to the right only.

[Monty Crain]

[KingfisherFarm]

@brownellsinc Hope you'll find a way to make that happen for us southpaws!

[TacticalSerenity17]

@Antiworld23 cmmg does produce a lefty for yah...glab they are lookin out for the little guy

[TheMinnesotaNice]

@Antiworld23 stag makes their own left conversions now

[jokerman213]

@Antiworld23 Cmmg has a lefty conversion now.

[beatpulp]

@Antiworld23 This may be a little late, but Stagg Arms now makes a left handed conversion kit. It is more expensive, but they always screw us lefties...

Do a web search for left handed Stagg conversion kit.

[hippie4life556]

i use winchester super x H.P.

[AdmiralGST]

this keeps jamming on my dad when he uses .22 bulk federal ammo

[ECTBWHO]

Federal is crap if its brought at walmart. The NRA has the same issue with it and they use it to train people how to use firearms because of the issue. Winchester is much better. But thanks to zombies it might be hard to find right now.

[jgrossma]

Supposedly th eAguila 60 grain "super sniper" .22LR bullets work well in the faster twist rate barrels.

[hippie4life556]

i hav this but i can not seem to get it out u hav tryed but i just cant do it i would be more than greatful if anybody could help me.

[novan3]

What make is your AR rifle>?

[hippie4life556]

dpms m4a2 but i finaly got it out it just needed a lot of oil and a hard tug so i got it out and i put the normal guts back in it.

[xycoordinatex]

I'd like to see a gas block plug like spike's has. But there will be quite a controversy because some people doesn't like dirts and foul blowing in the face and the receivers but want to install the plug VS. people who would rather let the gas tube blow the dirt and preserve the original config w/o the plug for .223 capability.

[Dammmj]

use the .223 barrel and chamber but shoot 22lr? wtf?

[fusionstar916]

yes.

a steel machined casing that matches a 5.56/223 case fills the chamber. Its the exact same concept as those gauge reducers for shotgun.

[Dammmj]

yes but wouldnt it effect the range of it since its a .223 and ur shooting a .22 outa it so its not getting the full rotation of the rifling id guess..but idk!

[fusionstar916]

Actually the 22lr coming out of a .223/5.56 barrel is over spun in some cases and will cause erratic grouping. But the 22lr will have the same range as a regular 22lr in the same barrel length. It will not have anywhere near the range of a .223

[Dammmj]

yeah im not mental i know my balistics and everything but idk much about barrel twists and stuff..over spun? i dont think so cause 22 to .223 theres a gap between there not that big of a gap but id think there would be less rifling touching the bullet so it wouldnt spin as good no matter what grain!

[fusionstar916]

a 40 grain 22lr is overspun in a 1/7 twist .223/5.56

It will still shoot accurately to a certain distance but it will show at longer distances. and for 22lr.. thats like at 100 yards.

some 40gr bullet designs shoot well in 1/7 but alot don't. It is recommended at least 50-80 grain bullets in a 1/7 twist barrel to achieve maximum stability.

[3RiversMI]

Could I single feed a 22 Magnum in this set up?

[brownellsinc]

Unfortunately tha conversion will not handle the magnum cartridge.

[Springr1911]

I'm looking at getting one these but I'm worried that my 1/8 twisted barrel will be to much for the 22 LR bullet. Any thought would be great.

[brownellsinc]

A 1 in 8 twist is too fast to give good accuracy for the .22 LR.

[ohjeeeeez]

does this mean my 1 in 7 will be even less effective?

[JohnnyRico004]

Has anyone had a problems with the cmmg conversion kit being stuck in their AR? I went shooting and I let the gun sit for a few days before I decided to clean it. When I took it out to clean, I couldn't take out the conversion kit. I oiled it and everything and it's still stuck. Any suggestions?

[c2muchmoney]

i have heard about this happening and it even happed to me once... I was lucky mine freed up with a little bit more force but i would not recommend hitting it with anything. A small tap on it might free it up but do this at your own risk... i would recommend putting some anti-seizing compound on part that looks like a 5.56 casing next time (because that is what is getting stuck in the chamber of the AR) ... srry i could not be more helpful

[ArmyGolem]

If you havent already solved your problem, there is another solution to what c2muchmoney said. When you get a normal 5.56 round stuck you can pound the butt stock into the soft ground and the inertia will force the bolt open and bring the casing out as well. Same concept might apply to your problem.

[3RiversMI]

I have not had a problem with sticking. My problem is not feeding the first round out of the magazine. I have to push the bolt closed with my thumb. Otherwise shoots great. Accurate too at under 100 yrds.

[artax1900ad]

i just got two of these along with 4 mags each and shot them all weekend...worth every penny...shot over 3000 rounds each...so much fun

[locolopelocolope]

So (and I´m sorry if I´m wrong) since the NATO 5.56 mm is so "close" to the 5.5mm of the .22LR, you don´t change the barrel, right?

We always hear that you never have to use an ammo not specifically designed for that gun; Could you have a "safety issue" with those kits?

Thank you.-

[dp665]

i have a bushmaster carboin 15 m4 with a gas piston conversion kit and i was wondering if the .22lr would have enough power to cycle rounds with the piston kit on.... also what kind of issues can i come into seeing how a .22 is .003 smaller then a .223 will accuracy be poor because the barrle not designed to shoot a .22

[brownellsinc]

The conversion kit will not function with the gas system's operating rod in place. The operating rod protrudes farther into the receiver & prohibits full insertion of the conversion bolt.

[brownellsinc]

You're correct in the assumption the .22LR won't perform as well as it would in a dedicated .22 LR bore. The twist rate is too fast & the bore is slightly larger contributing to the lack of accuracy. The conversion unit to be realistic, is designed to make practice with the AR-15 style rifle/carbine and make shooting more affordable.

[xycoordinatex]

So, I heard if you got dirty .22s left overs (dust, dirt, gum, etc) clogged up in the gas tube...be sure bring the original bolt and throw 5.56 to blow that dirt out! agree?

[Hilarios85]

just got one of this kits 2 weeks ago an love it works really nice..

[smithers115]

you dont have to change barrels?

[22Sunray]

No, the downside being that the rifling in the .223/5.56 barrel is not designed to work with a .22lr bullet. Also there is the possibility of lead buildup clogging the gas tube.

[bgboy26]

spikes makes one for full auto

[DocotWho94]

will that work on a class 3 firearm ???

[DustyGamma]

I doubt it would be able to fire in full auto or burst since it wouldn't be able to activate a standard auto sear.

[DocotWho94]

thanks do you now were i can get one that works on full auto i have seen it on youtube but cant find it for sale

[brownellsinc]

This may be available at Ciener in Florida still.

[brownellsinc]

The basic conversion will not work and will not activate the auto sear.