The main reason I have the CMMG 22 conversion is for a bug out situation I only need to carry one firearm with the 22 bolt carrier and then I can carry two very light types of ammunition with me 556 and 22 LR it’s the ultimate bug out combo

Thanks for bringing this content to me and my girlfriend. We have just ordered this kit and a variety of ammo and all of our questions have been answered in your video. I think a simple Red Dot adjustment with the CCI round nose copper plated and a person could be very accurate with those.🎉

It helps accuracy with the cmmg buffer tube plug to hold tension on your cmmg conversation keeping it snug in the chamber and a cmmg weight with the chamber bolt slide. To keep bolt from bounceing back when block slams shut. My cmmg shoots very tight groups now since installed the prices . They really made a big difference in performance. The kits even come with four ejected springs two light springs and two heavier springs and you can even get a higher grade foreign pin up grade . By the way bolt bounce will damage parts . The bolt weight system added will prolong the life of your cmmg And improve your performance greatly with the help of the pressure plug in your buffer tube holding the cmmg in the chamber more firmly

That Mossberg is gorgeous. I would love to pick up one of those classics someday.

Interesting! I guess the advantages are a saving of a couple hundred dollars over a .22LR AR-15, along with the exact same trigger, optics, etc., of your primary AR, so you can practice and save money - as long as you aren't concerned with accuracy.

I did a similar comparison recently myself. Had pretty good accuracy. It did run pretty much flawlessly most of the day. My boys and I ran through close to 500 rounds before it started giving us any trouble. It was pretty dirty by that point though.

I have a Chiappa arms .22 LR M Four polymer upper receiver conversion, 1-16 twist dedicated barrel w/o a gas port, of course.. I replaced the polymer with an Areo-precision mil-spec aluminum upper receiver and placed the whole thing onto a DTI-mil-spec lower receiver. I placed a Bore Buddy buffer tube plug (retaining the buffer spring to maintain tension at the rear of the bolt rails) to enhance reliability and accuracy, and a Catch 22 bolt catch. This rifle consistently shoots 2.5 to 3 inch groups at 100 yards. I also have a CMMG .22LR conversion kit for my 5.56 AR's. Even though the CMMG kit is super reliable, it shoots 4-5 inch groups at the same distance. I believe this is due to the fact that the Chiappa Arms barrel's twist rate, with no gas port, is optimized for the light 36-40 grain .22 LR bullets, while the 1-7 or 1-9 rate is too fast for the .22 LR.

I have had my CMMG kit for about 3 years now and there have been zero problems with it, other than crappy ammo related. I know not all rifles are the same, but my 16 inch, 1:9 twist AR shoots pretty tight groups with good ammo. I would say 2 inch groups or a tad smaller at 50 yrds and about 3/4 to 1 inch groups at 35 yrds, which is plenty accurate enough for squirrels. Cheap bulk ammo does good for just burning ammo or doing drills 50 yrds and under. But yeah, 22lr is very dirty in an AR, but I have gone through 1000 rnds or more at a time and never had a malfunction with the build up. Clean up is not to bad, I just spray it down with non-chlorinated brake cleaner and it washes right out, not much scrubbing. Re-lube and tour good to go. Even if the kit is not very accurate in another rifle, it's still a good and fun option to burn through a ton of ammo.

Great video, thanks! Got mine mainly for trigger practice. It works perfectly in my PSA AR.

It's good to see a better conversion than what I had to suffer with while at basic training (USAF)....every 6 to 10 rounds would jam

I love my cmmg conversion kit. I'm able to run drills all the time without spending a ton of money on .223/5.56. No, its not the same without recoil but it's still pretty good to practice manipulating the firearms. Also, it's a great iguana and toad killer down here in south Florida. I run mine suppressed with cci subs, cci quiet, stingers or cci mini mags. The gas can be redirected a little bit just by using a better charging handle and you can make a silicone seal if you'd really like to. For me a radian charging handle is always a great option and even better than my Geissele govt and airborne CH.

Very helpful comparison, thank you! I just picked up one of these kits, and after a short range session (75 rounds) with a single type of ammo, I was ready to declare it a POS. I did have a lot of reliability issues in my AR too, but I want to try it in another AR (or a couple of others) before I pass judgement. The accuracy was also abysmal, but I was also using the Federal bulk pack 36 gr copper clad HP ammo, which you have shown to be the worst of the bunch. I will try some CCI next trip, hopefully that will help with the accuracy at least.

What a smart review. Everyone should copy this style

For cheap ammo, CCI standard velocity has been the most accurate for me, using three different 5.56 barrels. It's also good ammo to shoot suppressed.

A lot of the blowback gas comes from the AR gas system. I got a cheap upper for 22LR and moved the gas block forward about 5 or 6 mm, to block the gas hole in barrel. No more hot gas in the face, and a lot less crud to clean up.

At 50 yds the rounds should be much tighter and accurate even with .22’s but you would have to zero scope in for the lighter loads.

An experienced shooter who casts and shoots his own lead bullets knows that for best accuracy he wants a bullet that is groove diameter or maybe half a thousands over groove diameter. Under sized lead bullets won't give finest accuracy. So with an AR we have a .223 groove diameter and we are trying to shoot .222 lead bullets through it. Not a recipe for accuracy. There is some variation in bullet diameters from brand to brand and lot to lot. So whatever barrel you have you are going to have to try different brands of ammo until you find one your rifle likes. When you find a brand and lot your rifle shoots well, stock up on it.

Those CMMG polymer magazines must be something new. The magazines that came with my kit were also polymer, but they more closely reassemble standard USGI AR Magazines.

Nice! Looks like it runs well enough…are you planning to reload any with that diy primer compound stuff? I have a little I picked up as a just in case supply but 9mm is the smallest/cheapest caliber I am willing to reload anymore so it will probably just collect dust haha

my understanding is its not the gas system that makes these kits inaccurate. AFAIK its because 22lr bullets are between .221 - .222 which is too small to fully engage the riffling. pair that with different twist rates and leading also.

What is the AR's twist rate? Nice video brother

Learned a lot, thanks! I run an olde spikes tactical 22lr conversion in my psa upper, having worse accuracy than I remembered in my old ar, I’ll have to try some mini mags. Also a ton of stove pipes ( spent casing getting lodged between the closing bolt and the front of the charging handle) any suggestions on remedying that issue?

It recommends 36 grain with round tip and round hammer

You need to use the cmmg conversion charging handle It blocks off the gas tube Keep the blowback from coming around the charging handle and hitting you in the face Plus it keeps alot of 22 gack out if your receiver It's well worth the extra coin

I have heard that the Aguila heavy bullet load groups well

I got a kit that would get stuck in my receiver. Got a replacement and that solved that issue but did get debris in my face a few times due to the need for a block in the charging handle and also even with the new kit got jams with thunderbolt lead and armcore copper to the point I had to remove bcg to clear it..one jammed into the barrel requiring me to use a .22 cleaning rod to remove. Going to get the weight kit and reliability kit at some point.

👍 🇺🇲 Looks good. Seemed to function well. 1:8 twist doesn't stabilize 22lr worth a darn so I had no expectation of accuracy. Surprised the Stingers did so well comparatively. Is it the higher velocity, or the lighter weight 32 gr projectile, or the combination? Curious if the 40 gr MiniMag would be more accurate than the 36 gr or the slower 40 gr round nose. Also curious if it will cycle subsonics. I realize that's asking a lot of a conversion kit, but inquiring minds want to know.

good info. Thanks

Love the brass catcher🗑️

When the Ceiner/Attichison 22lr conversion kit with the .223 nipple,was invented, ARs had 1:12 twist. Accuracy is going to be shit with a 1:8 twist. Also, leading the bore and plugging the gas tube will be a problem. CMMG says to shoot .223 every few hundred rounds of 22lr to keep from plugging the gas tube. My AR became a single shot .223 after a few thousand rounds of 22lr and I had to replace the gas tube..

Check out the Bore Buddy upgrade kit

mine, in a 16" 1-7 with SK yellow box at 50y was .5 to .75

My old ciener kit works with stangers , woodchucks don’t care for it out to 100 yds !

From my own experience: shoot for twenty minutes...spend 45 minutes cleaning all the crud out of your AR's bolt, chamber and bore. It's now relegated to last ditch use.

Is there any worry about leading the gas port? If not why?

If you rest mag on table ive got jams. Just like bx25 on ruger

i got the same kit, kept jamming up when resting on bench, from standing i had no issues

Federal bulk ammo gave me a squib with the ccmg kit

Having trouble with lead tips cycling. Any suggestions?

I bought just for drills and practice.

Does the 22lr make more debris in the ar compared to the 223?

I'm surprised a 2-inch bullet jump has any accuracy at all

BoreBuddy . . . BoreBuddy . . . BoreBuddy

What magazines are you running? Those don’t look like CMMG.

Can't find if the conversion kit requires rimfire or centerline ammo out of a 5.56 AR. Anyone have any idea?

2 inches at 50 yards with the CMMG?

22lr isn't a clean round. Just make sure to clean it good after the range and you'll be alright.

1:8 twist is far from ideal for most 22LR bullet weights. Should use a 1:12 or 1:14 twist barrel.

Where can I get A Mag and convertion kit

I am very surprised that the accuracy is so poor!

65gr. Aquila will improve this accuracy