.22 Conversion Unit for AR-15? [Archive] - Glock Talk


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bell ringer
01-19-2010, 10:25
I posted the following in the Black Rifle section accidently. I thought this would be a better forum. Sorry

<hr style="color: rgb(140, 115, 90); background-color: rgb(140, 115, 90);" size="1"> <!-- / icon and title --> <!-- message --> <!-- BEGIN TEMPLATE: ad_showthread_firstpost_start --> <!-- END TEMPLATE: ad_showthread_firstpost_start --> Howdy fellow members.

I was wondering if anyone has experience with a .22 Conversion Unit for AR-15?

I would like any and all input, advice, warnings, personal experience or anything else you think someone in the market should know.

I have been told to NOT convert my AR but to get a dedicated upper. This seems to be a very expensive option. Especially when I am seeing M&P .22s (entire rifles) in the low to mid $400's.

How about a little help here folks.


01-19-2010, 10:51
I havE a Spikes Tactical upper on my AR. I'm pretty happy w/ it so far, but haven't been able to shoot much recently. This is like the one I got; http://www.palmettostatearmory.com/sp12.php
Unfortunately, I didn't get it here. I paid almost this much for a slightly used one w/ only 1 mag!
I used to have an old Atcheson (?) conversion that was very unreliable. So far the Spikes hasn't has any issues.
Good luck

bell ringer
01-19-2010, 11:00
Thanks ... Great input! Just what I needed.

01-19-2010, 12:16
I don't own one, but plan on getting a conversion soon. I have a friend that has the CMMG bolt conversion, he has had no problems with it all. Plus, it's a bit cheaper.

I'm curious as to why you should not convert an AR?

bell ringer
01-19-2010, 13:40
If your question is for me I have to say .... Beats me why Not convert.

But I am sure someone here can answer your question.

Thanks for your input.

ken grant
01-19-2010, 14:13
Two main reasons most want an upper
Likely better accuracy, no bullet jump, bore dia. and better twist 1/16
Zero--- 99% have to change sight settings when using the kits.

01-19-2010, 14:47
You can not compare a M&P22 to an AR15.

My suggestion would be a Spikes Tactical kit for $200 or so.
A dedicated upper will be about $400-500

The dedicated upper will shoot 1" at 50 yards,
Most lits will shoot about a 2-3" grouping.

01-19-2010, 16:20
Not conversion unit but dedicated uppers.


01-21-2010, 11:34
I have a Ciener kit for my MP15; works great. Some people say don't buy it because the owner is apparently a pr!ck to deal with if you need anything repaired. I haven't had to call anyone, so I don't know about that.

Midway USA periodically has them in stock for 120-150; if they're out, request they email you when they come in stock, otherwise it's hard to get one.

01-21-2010, 14:27
Got a CMMG conversion kit when they first came out. No problems with it so far. Just follow the directions for cleaning and for shooting a few rounds of .223/5.56 through the AR afterwards and you shouldn't have a problem.

If you want accuracy than go with a dedicated upper if you want to do general plinking and not spend a lot of money than go with a conversion kit. Only suggestion I have on the conversion kits is to get extra magazines and a thumb loader like the one BDM sells (http://blackdogmachinellc.net/loader-ar-15-m16--22lr-thumb-loader-by-christie-s-products.aspx). The thumb loaders are a real time saver when trying to load the last few rounds in a 26 (or higher) round magazines.

01-23-2010, 16:41
I have a Ceiner Kit and have shot it in 3 of my different AR platforms. Don't drink the dedicated upper Kool Aid that all the Kool kids want you to. I'll go head to head for a buck a round with anyone who wants to put their dedicated upper against my kit. For a plinker/trainer it will do. The POI shift in my carbine with Bushnell Holosight (pre Eotech) is minimal at 50 yards. I have seen CMMG kits with 3 mags for 165 bucks just keep searching for the best deal.
For what it's worth when I was in the Military we used .22 conversion kits to qualify at 25 meters with the silhouettes on the target simulated out to 300 meters.
Save your coin and get a kit. There have even been some damn good deals on used kits on this board.

01-23-2010, 21:16
Took my Spikes 22 to the range today. A friend was shooting it as well & we not only had no problems of any kind, but we were amazed @ the accuracy! I was shooting CCI subsonics through my can w/ 100% reliablity.
A fellow beside us was shooting his new CMMG conversion (bolt). He was having all kinds of problems w/ reliability & accuracy.
Another fellow came in w/ one of the new Rugers (the 'tactical 10/22'). As I was leaving, he needed help b/c he had a round jammed in the chamber & couldn't get it out. We finally got it out for him, using a small screwdriver @ the chamber & a cleaning rod from the muzzle.
1 example of each is not exactly representative, though.

bell ringer
01-23-2010, 21:38
Y'all are a ton of help!

Thank you.

I will keep learning and searching.

01-23-2010, 21:42
A shop near me in SW CT has the following Colt Conversion kit:

02-08-2010, 11:13
I have a TacSol .22 upper. I like it alot. It's more expensive than the S&W and Colt .22's but I like the weight and I like the stainless bolt group. I feel the dedicated upper is a better option than conversions mainly because of the 1:16 barrel and youare not fouling up your gas tube (unneccessarily).
CDD lower
DPMS lpk
Magpul MOE $99 kit from DSG Arms
TacSol upper

02-08-2010, 13:15
I got the Ceiner conversion unit about 15 years ago. It's always worked fine. Can shoot squirrl or rabbit fine, so it's accuracy is good enough. I like it because when we travel I can take one gun and have access to .22 plinking...

Bilbo Bagins
02-09-2010, 13:18
Another CMMG owner here. Not an issue and accurate out to 50 yards. I have not had a chance to shoot out to 100 yards with it yet. I got the kit and 2 mags for $230. Definately worth it. I'm sure a upper is more accurate, but like you said, at that point I rather just get another .22lr AR rifle.

Here is a very lengthy youtube review of the CMMG conversion kit.


Ohh and just a side note, if you get one, LUBE it. When you buy it it comes dry, don't stick it in your AR without spraying it down with rem oil or CLP first.

02-10-2010, 16:52
The CMMG and Spikes are the same. I have a Spikes bolt etc but a CMMG barrel insert. They work fine together.

Secret message for those in the know. Obama be da debil

02-10-2010, 17:30
I have a Ceiner conversion and it works great. I haven't shot it past 50 yards, but at that distance the accuracy is just fine. It eats every brand of .22 I have run through, including the cheap bulk rounds at 36 grains. I lube it real good with Mobil 1 and have not had a single hiccup.

02-21-2010, 16:09
I have a spikes dedicated upper that works like a dream. I love it. I can use my .223 lower so I don't have to get use a new gun. If you can afford it, I would get the dedicated upper.

bell ringer
02-21-2010, 16:31
Well I thought I decided. The only problem is getting in touch with Spikes.

I have emailed, called them and then emailed again. I have left my phone number a week and a half ago. Is this a sign of possible bad customer service?

I can't afford the upper so I was going to go with their conversion kit and a couple extra mags.

I really just wanted to ask a couple simple questions. I emailed them to Spikes but still no reply.

Maybe someone here will know.
- Is the Kit Complete or are some of the other parts they have listed needed?

They have many .22 long rifle parts listed in the parts section and it seems like there are other items listed that might be required or at least suggested.

Anybody else had trouble making contact with Spikes.



02-21-2010, 23:17
The Tactical Solutions conversion unit is supposed to be the gold standard but it costs more than one of the 22 LR version currently being offered.

bell ringer
02-23-2010, 16:05
The Tactical Solutions conversion unit is supposed to be the gold standard but it costs more than one of the 22 LR version currently being offered.

This is a dedicated upper only, correct? I can't find just a conversion unit.

02-23-2010, 17:32
You can try to make a pig sing; but it's not very good and the pig doesn't enjoy it.

You want to shoot a .22 cal projectile down a barrel sized for .223. How much accuracy do you really expect.

The twist on your normal AR is 1:7 - 1-9; twist on a .22LR rifle is normally 1:16. AR twist works fine on a nominal 55gr projectile; how well do you think it's going to work with a 20-30 grain slimmer projectile?

AR is a gas operated system. A conversion kit is going to dump 22LR gases into the upper/lower recievers with no purpose. 22LR that I've shot tends to be dirtier than the Varget I load in .223.

These are all issues none of the conversion kits address (except for Spikes which does provide a block for the gas tube). The rest is plain physics.

I went through the same issue. A dedicated upper is the way to go, unless you just want to make a little noise. If you want a cheap to shoot AR, start reloading your own ammo. Just my $.02

bell ringer
03-01-2010, 00:30
Thanks for everyone's input.

I did order a Spikes Tactical Conversion Unit with a couple of extra mags.

I just couldn't go all the extra for a upper.

This is just for cheap practice. If I want accuracy I break out the semi-custom Ruger 10/22

bell ringer
03-04-2010, 16:48
OK folks like I said in the last post .... I ordered a Spikes Kit and several mags.

That was on February 24, 2010. I contacted them yesterday and was informed they are on back order. I was told there is No ETA. I was a little ticked off and asked why I wasn't informed of this when I ordered. The answer was that it clearly states it on the site. Not exactly accurate. The site has been changed to say: **Please allow 4-6 weeks for Delivery**.

This would be acceptable if they would indicate I would have my order in 4 to 6 weeks but they won't commit to anything. So now my wait is indefinite.

I sure hope this kit is worth the wait and as good as you folks indicate. In the meantime if anyone is looking for a kit they can use anytime soon you may want to go a different way.

Their customer service lacks something.

03-06-2010, 12:48
I've been using an M261 kit and BDM hi-caps for a few years, good enough for minute of paper-plate at 25yards. And a lot cheaper than a dedicated upper or Umarex M4 or S&W MP15/22.

Run a mag of 5.56 thru every now and then to keep the gas tube clean and your'e fine.

03-25-2010, 01:36
The AR15 .22lr setup is a lot of fun. I've shot over 1,500 rounds through my dedicated Spike upper. For some reason, my Spike doesn't like CCI mini mags and Blazers. It loves Federal Champion, American Eagle, Win Xpert HV, Win wildcat, Win Dynapoint and the Win 555. The last range trip, I used the BDM drum and it was a blast.
http://i285.photobucket.com/albums/ll59/k9driver/ar22002.jpg (http://s285.photobucket.com/albums/ll59/k9driver/?action=view&current=ar22002.jpg)
http://i285.photobucket.com/albums/ll59/k9driver/ar22007.jpg (http://s285.photobucket.com/albums/ll59/k9driver/?action=view&current=ar22007.jpg)
http://i285.photobucket.com/albums/ll59/k9driver/ar22005.jpg (http://s285.photobucket.com/albums/ll59/k9driver/?action=view&current=ar22005.jpg)
http://i285.photobucket.com/albums/ll59/k9driver/ar22006.jpg (http://s285.photobucket.com/albums/ll59/k9driver/?action=view&current=ar22006.jpg)
http://i285.photobucket.com/albums/ll59/k9driver/bdmdrum004.jpg (http://s285.photobucket.com/albums/ll59/k9driver/?action=view&current=bdmdrum004.jpg)

03-26-2010, 21:08
That's the way to go. Conversions are less accurate than I am. A .22LR going down a .224 bore with a 1:7 or 1:9 twist is just making noise. 1" - 1.5" groups at 25 yards are not acceptable. A decent rifleman can do better than that in every position but standing. Standing a decent rifleman can hit a 2" circle at 25 yards and an 8" (deer vital zone) circle at 100 yards. When you add the 1.5 inches to the 1.5 inch wobble zone, the best you're going to get standing is 3 inches with one of those kits.

03-27-2010, 13:41
aimsurplus has dedicated upper for 340shipped
i almost bought that but i bought .22 for my glock 17
love shooting cheaper ammo meow