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CNMG AR-15 .22 L.R. Conversion Kit ??

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2.2K views 13 replies 7 participants last post by  Jlrhiner  
#1 ·
Do any of you guys have one? If so how do you like it? I ordered one the other day, and it's scheduled to arrive this coming Wednesday on the brown truck. I bought the "Bravo" model with 3, 25 round magazines. $180.00 + Tax and shipping. Not too bad. I got it from Primary Arms. They shipped it within 2 hours.


I've watched a bunch of videos on You Tube, and most seem pretty happy with it overall. The AR twist rate, (1 in 7"), over spins the .22 L.R. bullet by a factor of over 2 to 1, but even so it doesn't seem to deter from accuracy too much. Most of them group pretty well. At least from the demonstrations I've seen.

And the only way you're going to get around the twist rate, and get a 1 in 16" twist barrel, is to go with a dedicated .22 L.R. upper. And for a good one you're looking at $500.00 or so. I didn't want to spend that much, because this is more or less a SHTF purchase, and a way of making all of my AR's able to fire .22's.

I know Ciener makes one, but I've heard that guy is nothing but trouble to deal with. I don't even know if he makes them anymore. I have a Beretta .22 conversion for my Beretta Model 92 FS, and it runs well. So I'll be looking forward to trying this one out. You guys chime in if you have any advice on ammo. It says they run best on Federal Copper Plated Hi-Speed Hollow Points. And I have literally dozens of 550 round, "Bulk Packs" of that stuff.
 
#2 ·
I've had one for about a year now ever since ammo got in short supply and it works great, I've yet to have any problems with a failure to feed or any of the three magazines it came with. I will recommend shooting a few rounds of 55.6 through the weapon every few hundred rounds of 22 to clean any lead build up out of the gas tube, as 22 cal rounds tend to be dirty and lead will build up around the gas tube port, a friend of mine had his gas tube foul up completely from using the kit and not cleaning the rifle after thousands of rounds of 22, other than that issue their great to own and cheaper than 556 to shoot
 
#3 ·
I have both Ciener and CMMG. My Ciener is in a dedicated .22LR build with the gas port blocked in a 1x12" M16 barrel (chopped to 16 inches). It's surprisingly accurate. My other conversion kits are really just for doing live-fire drills without expending centerfire ammo. I don't get excellent accuracy, but it's adequate for all the other aspects of the training I do.

ROCK6
 
#4 ·
I have both Ciener and CMMG. My Ciener is in a dedicated .22LR build with the gas port blocked in a 1x12" M16 barrel (chopped to 16 inches). It's surprisingly accurate. My other conversion kits are really just for doing live-fire drills without expending centerfire ammo. I don't get excellent accuracy, but it's adequate for all the other aspects of the training I do.

ROCK6
I find mines not really a tack driver either, but it gets close enough to full fill the role I bought it for, and that's to get training in without burning through my center fire ammo so fast.
 
#5 ·
I have one of each, they work well for torso sized steel, at run and gun distances. They do better in my 1:9 rifles.

The first one I bought (Ciener) had feed issues. I bought the other one (CMMG) later, hoping it was better, and discovered the first one had mags that were just slightly off spec at the mag catch slot. Had to remove a sliver of plastic, and now all mags work fine in both adapters.
 
#6 ·
It came this morning. I didn't care for the blister pack they shipped it in, so I went to Harbor Freight and picked up one of those Apache Pelican style medium sized cases with the "pluckable" foam, and it fit perfectly with all 3 magazines. As soon as it cools off, I'll take it out and light it up. It looks to be very well made. We'll see.

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#14 ·
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