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Thread: 1:7 twist with .22?

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    1:7 twist with .22?

    I had another post about me purchasing my first ar. That thread went down hill at a fairly fast rate so I will not be mentioning what brand of ar I am going with. But I have a question about some .22 conversion kits. One that I saw got some decent reviews (albeit on YouTube so I take that with a grain of salt) but the cmmg conversion is one that I am referring to. I know that the videos I've seen were using a 1:9 twist out of a 16" barrel. The rifle I would be getting has a 1:7 twist. Is that an issue with .22?

    I know that .22 have a higher twist rate because the bullets are lighter so I don't know if 1:7 will stabilize it enough. I've also heard various opinions on the cmmg kit because it's only replacing the bcg. So would it be a better option to just buy a dedicated .22 upper? Thank you in advance for any help. And for any members that were in my other thread you should have gotten a pm but if not, thank you for the advice in that thread as well.

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    1:7 is too fast for 22lr but it should still shoot it ok. Most people who have the 22lr conversion kits say your accuracy will suffer in a barrel with 1:7 or 1:9

    Technically you are better off buying a complete 22lr upper or rifle altogether. But if you are on a budget the CMMG 22lr conversion is a good choice if you are just plinking with it. Just don't expect the conversion kit with a 1:7 or 1:9 to be as accurate as a 22lr upper.

    I have the M&P15-22 which has a 1:15 twist rate. Its pretty accurate for my uses. Before I bought it, I was debating on buying the 22lr conversion kits, but I ended up buying a complete rifle instead.

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    I would assume I could get a complete upper with a 1:15 (or close) twist for around $300 right? I'll look online now to see. The one thing that does worry me more than the accuracy is the reports of the .22 clogging the gas port in the barrel. But then I've read that it's only if using lead.

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    Quote Originally Posted by 19trax95 View Post
    I would assume I could get a complete upper with a 1:15 (or close) twist for around $300 right? I'll look online now to see. The one thing that does worry me more than the accuracy is the reports of the .22 clogging the gas port in the barrel. But then I've read that it's only if using lead.
    Yes, you can get a complete .22lr upper for around $300. I think they're not DI, just use the actual recoil to operate their BCG. Easy enough to set it up to mimic your 5.56 upper if desired. Only real downside is the lower gets dirtier.

    No affiliation, but Core 15 has some 5.56/.22lr upper combos right now. No idea how their quality is, but look on TOS if you want.

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    Quote Originally Posted by 19trax95 View Post
    I would assume I could get a complete upper with a 1:15 (or close) twist for around $300 right? I'll look online now to see. The one thing that does worry me more than the accuracy is the reports of the .22 clogging the gas port in the barrel. But then I've read that it's only if using lead.
    Then why title the thread about 1/7 twist and instead make it about clogging gas ports.

    This should help below.

    Here is one : https://www.m4carbine.net/archive/in...p/t-26693.html

    Just search .22 conversions and you will find threads to answer not just these questions, but literally anything else you can come up with question wise regarding the .22 converion kits. Trust me, you may not think it's been asked, but most likely it has been, numerous times.

    Personally, if you have been on arfcom or the other "ar" forums, you basically have to relearn everything here as you quickly find that 99% of the crap on other forums is just that... crap.
    From TOS ... "buy the shit out of that thing, all the mil spec is just nonsense."

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    I just looked really quick and it seems like that is about the price point of most of the .22 uppers. The lower getting dirty is not as much as a issue for me because I clean my firearms completely after every range trip no matter how many rounds I shot.

    As to the cost. I am looking to buy a .22 conversion mostly to practice with and play around. Then when I want to shoot 5.56 I can. In my thinking I would rather have a 5.56 rifle that I can shoot .22 with than to buy a .22 rifle and be stuck with it being only .22.

    I tried to search but didn't find anything conclusive. I am using tapatalk so that may have something to do with it. I titled it this because I am still concerned with accuracy but another concern is clogging of the has port. But now that I see what I can get a new upper for I may not need to worry about either of those.

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    Quote Originally Posted by 19trax95 View Post
    I would assume I could get a complete upper with a 1:15 (or close) twist for around $300 right? I'll look online now to see. The one thing that does worry me more than the accuracy is the reports of the .22 clogging the gas port in the barrel. But then I've read that it's only if using lead.
    It's not my money or gun so personally I'm not really invested. I'm just more curious as to why you were sweating spending a couple hundred extra bucks to secure a proven better quality rifle, but have no worries about dropping $300 or so on a .22 upper after you have purchased a rifle.

    I'm not looking to get this thread off track and this is going to be my last reply in here. I also mean no offense by this question, as I'm a "to each his own" type of person. Again, more just curiosity then anything at this point.

    Good luck, hope you get something you enjoy and shoot the S*** out of it!

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    No offense taken at all. I will try to answer the question the best way I can. So, I am thinking about dropping another $300 on another upper because I would be able to use it. As opposed to spending that $300 on a better rifle where I doubt I'd notice any difference in use. I'll go back to my tool example again. Say I have a hammer, one is $20 the other one is $40. Both will do the same thing I want which is pound a few nails on the occasional project. Both have similar construction and both look the same. Logical I'd pick the cheaper one because there is a higher likely hood of me not being able to tell the difference in the way it hammers a nail.

    That is my thinking with the rifle. Now that isn't a good example but that's all I can think of. But now say since I bought that cheaper hammer I can now have money left to buy other tools (.22 conversion). So then I'd have a hammer that does what it should and say a set of screw drivers.

    I can't think of any other way to explain my thinking. But it may not be the right way to think but that's the way I am.

    And I just tried to search from my computer and I did find a few threads on similar questions. I guess I just need to figure out how to word it right.

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    I had one of those CMMG conversion kits and it was a piece of junk. If you could get a dedicated upper for only $100 more, go for it.

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    That's what I'm thinking now. The .22 upper wouldn't have a gas port right? The cmmg kit is $200 something so the difference is negligible.

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