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Thread: Green Mountain AR-15 Barrels?

  1. #1
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    Green Mountain AR-15 Barrels?

    Hey guys,

    I have recently received a "20,1:8, gov profile barrel from Green Mountain. These folks are pretty well known for making Ruger 10/22 barrels and Barrels for for blackpowder rifles and pistols.

    The barrel was ordered by one of my clients and shipped direct to me for assembly of an upper. I won't be anything special or "tacticool". It will be a pretty plain jane build.

    GM 20" 1:8 gov profile barrel

    Midwest Industries 15" SS tube

    Spikes Receiver

    BCM BCG ( i'll be head spacing it of course)

    A.R.M.S. 71L buis

    Not sure what optic he's going to go with.. I'll add that later.


    The reason I am bringing it to you attention is that it is VERY reasonably priced and apparently worth a look see from all I've read about them.


    I'll post pics and a range report on this build in the near future.

    (yes, yes, I finally got a digital camera)

    Regards,
    TJ

    ETA: Here's a link to the manufacturer's website: http://www.gmriflebarrel.com/catalog...sriflesbarrels
    Last edited by The_Hammer_Man; 01-27-11 at 17:56.

  2. #2
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    Their prices look nice for the claimed specs.

    Can you test the chamber to see if it's a true 5.56 NATO chamber vs. a .223 Rem?

    Do you have the practical ability to measure things like bore diameter and rifling twist to see how well made it is from a precision standpoint?

    I read the title and was quite skeptical given that company's background. Not that I've heard of any problems with their black powder and low cost AKM barrels.

  3. #3
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    http://www.gmriflebarrel.com/product...aspx?id=GM-M16
    this is the barrel i just bought for an a2 build. it has really thick parkerizing, and the chrome lining looked great. i heard they supply some barrels too colt for one of there rifles.

  4. #4
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    I've had no issues with their 1022 barrels. They have held 1/2" or less at 50yds with the right ammo.

  5. #5
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    Quote Originally Posted by SomeOtherGuy View Post
    Their prices look nice for the claimed specs.

    Can you test the chamber to see if it's a true 5.56 NATO chamber vs. a .223 Rem?

    Do you have the practical ability to measure things like bore diameter and rifling twist to see how well made it is from a precision standpoint?

    I read the title and was quite skeptical given that company's background. Not that I've heard of any problems with their black powder and low cost AKM barrels.
    funny you should mention these actions....

    I intend to perform those tests and a few others such as measuring crown angle and depth and a few other things.

    The end product is going to be this guys "tractor" rifle that he takes with him just about everyday. Seems they've been having issues with feral dogs and hogs in his neck of the woods.

    If it turns out to be within spec I'll probably get another and torture test it. IE, Do a "dirty 20" thang and just beat the holy hell out of it.

  6. #6
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    Quote Originally Posted by The_Hammer_Man View Post

    BCM BCG ( i'll be head spacing it of course)
    Just gaging it or actually changing it?
    Last edited by MarkG; 01-28-11 at 08:38.

  7. #7
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    I've had good luck with GM's 10/22 barrels, and I'm pretty sure Ballistic Advantage uses GM blanks for their .22LR AR barrels - mine has been great. Whether that rimfire experience translates to 5.56, no idea.
    Ken in Illinois

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