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Old November 22nd, 2018, 11:07 PM #1
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Who makes a good .22 convertion for an AR

Who makes a good .22 convertion for an AR. Especially one I might find on sale for black Friday.

First choice would be an entire upper, second a drop-in for a ,223 upper, and the long shot, a left handed conversion.
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Old November 22nd, 2018, 11:12 PM #2
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Old November 22nd, 2018, 11:17 PM #3
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Seconded. My dedicated cmmg 22 upper is great
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Old November 22nd, 2018, 11:29 PM #4
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I forgot about them. They even have the LH conversions.
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Old November 22nd, 2018, 11:32 PM #5
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I've never read anything bad about their 22 conversions other than .223 and .22LR bullets have different barrel diameters so you end up with some accuracy issues. I just went with the dedicated upper since all the parts were made to function together from the factory
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Old November 22nd, 2018, 11:44 PM #6
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I've never read anything bad about their 22 conversions other than .223 and .22LR bullets have different barrel diameters so you end up with some accuracy issues. I just went with the dedicated upper since all the parts were made to function together from the factory
My first choice would be a dedicated upper. But the wife shoots LH and has a LH AR. It would be nice to have her rifle able to plink cheap ammo. So a little shift in accuracy isn't a big deal as long as there is no harm to the upper.
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Old November 22nd, 2018, 11:55 PM #7
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I believe the accuracy is based on the barrel twist rates. Most 223/5.56 NATO is 1:7 to 1:9, while most 22LR is 1:12 to 1:14. Some ARs were 1:12, but they went with a faster twist rate for heavier bullets. As your comment mentioned, a dedicated upper is set up for 22LR, versus using an existing faster twist 223/5.56 NATO upper. With that said, did you want accuracy or convenience?


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Old November 23rd, 2018, 12:25 AM #8
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Quote:
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I believe the accuracy is based on the barrel twist rates. Most 223/5.56 NATO is 1:7 to 1:9, while most 22LR is 1:12 to 1:14. Some ARs were 1:12, but they went with a faster twist rate for heavier bullets. As your comment mentioned, a dedicated upper is set up for 22LR, versus using an existing faster twist 223/5.56 NATO upper. With that said, did you want accuracy or convenience?


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This would be for short range plinking. I have other .22 rifles for accuracy. So a fun gun. The only thing is I would like to shot it suppressed, so having the bullet come out in a very straight line is paramount. Ruining a can pretty much eliminates any fun factor.
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Old November 23rd, 2018, 12:34 AM #9
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Old November 23rd, 2018, 01:12 AM #10
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CMMG does a good job on their kits but be careful using them in a gun that you will switch back to 5.56.

Lead buildup in the bore can cause high operating pressure. The lead .22 projectiles can also block the gas port and gas system.
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