Converts 5.56 MSR to .22LR rifleEasy to install - switches caliber of gun in less than 30 secondsSwaps AR-15 bolt carrier with drop-in converterSave money - .22LR ammo is a tenth the price of standard 5.56 roundsMagazine features bolt hold open followerSave money without a bunch of hassle by converting your 5.56 MSR to a .22LR rifle with a CMMG ARC-22 .22LR Conversion Kit. This easy to install kit swaps out the bolt carrier group of your high performance AR-15 with a drop-in converter that works smoothly with the kit's replacement magazine. With a switchout that takes less than 30 seconds, you can soon be firing ammo that's a tenth the price of standard 5.56 rounds through your AR-15 so you can save significant money while continuing to enjoy your MSR. All CMMG .22 LR magazines have a bolt hold open follower. Choice of phosphate-treated steel action or stainless steel action with stainless steel chamber adapter. NOTE: Ten round kits come with Evolution magazine as shown with blue finish. 25 round kits come with standard magazine as shown with stainless steel finish.

Customer Questions & Answers:

9 Questions

44 Answers

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Questions & Answers for CMMG ARC-22 .22LR Conversion Kits

Question

Do I need a 22 upper or am I just using the 556 upper with a 22 carrier group?

asked 1 year, 2 months ago

Scoot1969

- Atwater

on CMMG ARC-22 .22LR Conversion Kits

8 answers

Answers

answer 1

Just change the bolt in your 223 or 556 and use the supplied mag

answered 4 months, 1 week ago

9mmsquig

answer 2

answered 5 months ago

oldgunnut2

- Mississippi

answer 3

No need to change the upper, I use mine in my Colt and my M&P and both work great and the accuracy is unbeatable.

answered 7 months ago

Steve71

- Hillsboro, Ohio

answer 4

Just drop this into your .223/556 upper and lock in the 22mag that comes with it, your ready to shoot.

answered 8 months ago

RunNgun

- Midland, Virginia

answer 5

Just swap the carrier group any any 556 or 223.

answered 9 months ago

JaredQ

- Denver, CO

answer 6

Yes you will use the 556 upper with a 22 carrier supplied in the kit with the 22 specific magazine.

answered 10 months ago

Anonymous

- MO STL

answer 7

NO!

answered 1 year, 1 month ago

JGBI

answer 8

It's simple. Remove the bolt from your current AR, slide the new .22 conversion bolt back into your AR using the same charging handle. Load your .22 magazine and start shooting.

answered 1 year, 2 months ago

GunsAtHome

- Gurnee, IL

Question

Wiil this work in any manufacture's weapon, e.g. Colt? Also, will it work in a .223?

asked 1 year, 2 months ago

MikMal

on CMMG ARC-22 .22LR Conversion Kits

7 answers

Answers

answer 1

It fits and works in my Bushmaster. It works in both my Colts. It works.
Yes it works in a .223. However don't try to use .223 in the magazine or with the conversions bolt carrier group. Thats just asking for disaster to visit you.

answered 3 months, 4 weeks ago

REW3

- Western WA State / SATX

answer 2

Yes

answered 4 months, 1 week ago

9mmsquig

answer 3

I got a Bushmaster 223-5.56. Dropped right in, fired perfect for almost 100 rounds. I stopped, it was ready for more!

answered 7 months ago

Plunker

- Illinois

answer 4

Just bought one and it fits my Colt .223 and my M&P .223, great product and lots of fun.

answered 7 months ago

Steve71

- Hillsboro, Ohio

answer 5

Yes it will work with any AR15 platform.

answered 9 months ago

JaredQ

answer 6

Yes any AR 15 type .223

answered 10 months ago

Funbubba

- Amissville, Va.

answer 7

I'm not sure you read the product description! If you have questions about the fit and function in your weapon you should contact your weapons manfacturer. But from all I have read and with my experance it will fit almost all AR platform Rifles in .223/ 5.56mm (NATO)

answered 1 year, 1 month ago

JGBI

Question

Does the 22lr really cycle BCG through each round?

I know many have already stated this works great, so indirectly my question has probably already been answered. But specifically, I wanted to know, will the 22lr actually have enough 'oomph' to cycle the round through automatically? Or does the operator cycle through manually? Any guidance on ammo quality, e.g. subsonic versus supersonic stingers?

Thanks all!

asked 7 months ago

Bluepaddle

- Denver

on CMMG ARC-22 .22LR Conversion Kits

7 answers

Answers

answer 1

You put in the conversion BCG. It has its own spring and bolt. It does not use the buffer spring for the .223, it uses a spring in the conversion assembly. Picture it like this. You just put a bolt assembly like in a Ruger 10/22 into your AR. Mine works perfectly, and I am shooting the Remmington bulk ammo.

answered 2 months, 2 weeks ago

pidge

- Oklahoma

answer 2

Just had an occasional Loading the initial round Which I will buy the optional forward assist to fix that but after that no problems at all. It has its own spring mechanism in the bolt and does not use the tube spring It cycles within the bolt

answered 4 months, 1 week ago

9mmsquig

answer 3

I only use high velocity in mine. I use 25 round mags and it cycles great. I have a 556 barrel. I was really happy I can train with my tactical rifle for .22 ammo prices, The AR .22 ammo works best, although cheap ammo still works. No misfires or FTF's. Sometimes ejection on cheap ammo the case will get stuck in assembly about 3 per 100 rounds.

answered 4 months, 2 weeks ago

oldman22

- Arizona

answer 4

works just like any other semi 22 cal. insert mag , put one in the chamber ,keep pulling the trigger until you hear a click.

answered 5 months ago

oldgunnut2

- Mississippi

answer 5

Out of 5 magazines we had to manually cycle 2 rounds. May have been the ammo, but for the most part it cycled just fine. We were shooting bottom of the line 550 count .22 lr cartridges and had very few issues.

answered 5 months ago

AztecShooter

- Aztec, New Mexico

answer 6

I used CCI .22 Tactical ammo. Plenty of 'oomph' but practically no recoil. Part of the fun of .22 shoot is trying different ammo to find the best for your guns!

answered 5 months, 2 weeks ago

HappyWithIt

answer 7

Yes. The kit is like a standard 22lr semi auto action that drops in. the kit does not use the gas system. it has its own spring inside the bolt. mine worked 100% perfect. i think these kits do not work with the piston ar 15s though, but those aren't that common. i have not used subsonic or any special ammo in it but i know it works good with standard 22lr ammo (36 grain hp bulk stuff)

answered 5 months, 3 weeks ago

Anonymous

- wi

Question

How many round clip comes with it.

asked 1 year, 2 months ago

Rider254

on CMMG ARC-22 .22LR Conversion Kits

6 answers

Answers

answer 1

answered 4 weeks, 1 day ago

Anonymous

- Dayton, OH

answer 2

Rider,
Not "clips", magazines. There are two different sizes depending on which of the kits you purchase, [ 10 and 25] plus you can purchase extra magazines at a later date if you want.

answered 3 months, 4 weeks ago

REW3

- Western WA State / SATX

answer 3

answered 4 months, 1 week ago

9mmsquig

answer 4

You can get a 10 or 25 round clip, I suggest the 25.

answered 7 months ago

Steve71

- Hillsboro, Ohio

answer 5

Only one but you can purchase more.

answered 1 year, 1 month ago

JGBI

answer 6

Look at the ordering options. With the stainless steel you have the option of a 10 or 25 round MAGAZINE, with the blued option it's a 10 round magazine only

answered 1 year, 2 months ago

RM19

Question

This is called a "Kit". Which kit is it -- alpha, bravo, echo, india? What exactly is included in this kit version?

asked 7 months ago

Engine

on CMMG ARC-22 .22LR Conversion Kits

6 answers

Answers

answer 1

Mine was a Bravo, it came w/ 25 round mag and the drop in carrier.

answered 4 weeks, 1 day ago

Anonymous

- Dayton, OH

answer 2

You get a bolt and carrier group and a single new magazine in each kit. Depends on whether you order with 10 or 25 round magazine as to which "Kit" you get. It's that simple.

answered 3 months, 4 weeks ago

REW3

- Western WA State / SATX

answer 3

It is the alpha. It comes with a 10 round magazine and the Replacement bolt

answered 4 months, 1 week ago

9mmsquig

answer 4

remove the ar15 mag and bolt carrier--place the conversion in exactly the same place as the ar15 bolt carrier--place "kit" mag in mag well, pull & release the cocking handle , place safety in fire position , pull trigger and enjoy!!

answered 5 months ago

oldgunnut2

- Mississippi

answer 5

You get the 22 bolt (complete) and a mag. 25 round if you order Stainless, 10 round if you order blued.
Seriously, takes a minute to drop your old bolt carrier group out, drop new 22 bolt group in, insert new mag with 22 rounds, ENJOY!
AR CONVERSION KIT 5.56/.223 to 22LR

answered 7 months ago

Plunker

- Illinois

answer 6

Bolt and Magazine

answered 7 months ago

Steve71

- Hillsboro, Ohio

Question

Will it work in my Smith and Weston M&P 15 Sport?

asked 9 months ago

Bill1022

on CMMG ARC-22 .22LR Conversion Kits

3 answers

Answers

answer 1

yes

answered 4 weeks, 1 day ago

Anonymous

- Dayton, OH

answer 2

Yes as long it is a 223 or 556

answered 4 months, 1 week ago

9mmsquig

answer 3

Just purchased one for my M&P and it works great. I would recomend the 25 round mag rather than the 10 round.

answered 7 months ago

Steve71

- Hillsboro, Ohio

Question

Does barrel length or twist rate affect the use of 22LR in a 556 AR?

I don't want to mess up the barrel.

asked 4 months, 3 weeks ago

Superflymd

- South Texas

on CMMG ARC-22 .22LR Conversion Kits

3 answers

Answers

answer 1

It will not. It may not be as accurate at 5.56 rounds.

answered 4 weeks, 1 day ago

Anonymous

- Dayton, OH

answer 2

You should be fine for general plinking and target practice. Don't try to use the conversion kit to make your AR into a tack driver .22 There is a slight bit of sensitivity to ammunition variances but nothing that will adversely affect your barrel or rifling.

answered 3 months, 4 weeks ago

REW3

- Western WA State / SATX

answer 3

Not at all. I was surprised how accurate it was. Go with the stainless steel model, you will be very happy.

answered 4 months, 2 weeks ago

oldman22

- Arizona

Question

Will this fit a Windham AR15

asked 3 months, 3 weeks ago

Grex

on CMMG ARC-22 .22LR Conversion Kits

3 answers

Answers

answer 1

Just shot about 130 rounds',with this conversion, through my Windham with no problems.

answered 3 weeks, 6 days ago

Davyo

- Texas

answer 2

Yes, it will. It fit my Colt LE6920

answered 4 weeks, 1 day ago

Anonymous

- Dayton, OH

answer 3

YES!

answered 3 months, 1 week ago

KFM41

- MASS.

Question

Will Ciener mags work with this unit?

asked 7 months ago

Fordy

on CMMG ARC-22 .22LR Conversion Kits

1 answer

Answers

answer 1

No, they wont. They do not engage the bolt carrier properly. Stick with OEM mags for this conversion.

answered 3 months, 4 weeks ago

REW3

- Western WA State / SATX

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Looking for Answers about CMMG ARC-22 .22LR Conversion Kits?

Customer Questions & Answers for CMMG ARC-22 .22LR Conversion Kits

Questions & Answers for CMMG ARC-22 .22LR Conversion Kits

Do I need a 22 upper or am I just using the 556 upper with a 22 carrier group?

Wiil this work in any manufacture's weapon, e.g. Colt? Also, will it work in a .223?

Does the 22lr really cycle BCG through each round?

How many round clip comes with it.

This is called a "Kit". Which kit is it -- alpha, bravo, echo, india? What exactly is included in this kit version?

Will it work in my Smith and Weston M&P 15 Sport?

Does barrel length or twist rate affect the use of 22LR in a 556 AR?

Will this fit a Windham AR15

Will Ciener mags work with this unit?

Customer Questions & Answers for
CMMG ARC-22 .22LR Conversion Kits