Ok so assuming the same twist and barrel quality, how big of a difference is there between a dedicated collar and chamber insert with the CMMG kits? Accuracy? Reliability?
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Ok so assuming the same twist and barrel quality, how big of a difference is there between a dedicated collar and chamber insert with the CMMG kits? Accuracy? Reliability?
Um... the .22 dedicated barrels havea 1/16 twist, ARs generally have 1/7-1/9 twist. .22 dedicated barrels don't have a port because they don't need one either. You can't assume same twist, you have to take it with the collar vs insert.
You'll see MUCH better accuracy out of the slower twist .22 dedicated barrels. Plus you don't have to clean out your gas tube.
"I never learned from a man who agreed with me." Robert A. Heinlein
I know. The question still stands. I've got multiple barrel options. The custom barrel makers can't do a dedicated collar in the configuration I want and I'm wondering how big of a deal that is. The custom barrel makers can only do 5.56 chamber.
So I can either get a false chamber or a sub optimal barrel profile. I'm building an integrally suppressed AR in 22LR.
Top contenders for steel (can't use Al) 22LR barrels are CMMG or Compass Lake. Compass lake can do either the m261 kit or CMMG w/ false chamber. Compass lake can not do a dedicated collar.
Last edited by wacki; 03-28-14 at 12:34.
Why do you need a custom barrel? http://www.cmmginc.com/category_s/1841.htm
If the length or profile doesn't suit you, send it to ADCO and they'll fix your problem.
I can tell you that the dedicated cmmg .22lr barrel with the collar is a very good setup. Using the chamber insert probably works, but I can't make a comparison with the same barrel, only with a 5.56 barrel. I can't imagine many, if any, people have a 5.56 chambered 1/16 barrel or a .22lr extension on a 1/7 barrel to do a apples to apples test.
Last edited by Koshinn; 03-28-14 at 14:37.
"I never learned from a man who agreed with me." Robert A. Heinlein
Why ADCO? Do they make CMMG? I need a thick bull barrel as a HUGE suppressor will be hanging off the end.
You know you'd probably get a whole lot more input if this thread was moved to beyond 556...
And Adco make cmmg? They are a gunsmithing shop that can reprofile/chop barrels etc. Honestly a little confused to why it will have such a huge supressor on it for a .22. .22's really aren't hard to tame down sound wise at all. The action will be what makes the most noise, and a silencer has nothing to do with it.
You really need to get a true dedicated .22 barrel like mentioned above. 1/7 & 1/9 is worthless for .22's especially if your putting as much money into the gun as it seems you will be.
From TOS ... "buy the shit out of that thing, all the mil spec is just nonsense."
You should get the 22LR chamber in the barrel. If you don't want to compromise on the profile I think you will eventually regret settling for a sloppy chamber adapter. Do a bit more research and you can find a couple of gunsmiths that do 22LR AR barrels.
What is the reason for an integral on a 22LR AR?
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