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Thread: Looking for a specific barrel..and other questions.

  1. #11
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    Quote Originally Posted by Tx_Aggie View Post
    I was going to suggest taking a look at this exact barrel from Criterion.

    The Combo is $390 at Brownells.

    Here's a link:

    https://www.brownells.com/rifle-part...prod78010.aspx

    They use a BCM bolt. You can get the barrel without the included bolt from Brownell's, Optics Planet, and MSR Arms for $269.

    It's also available in nitrided stainless (no bolt) for $297 from Optics Planet & MSR Arms.

    Criterion lists several profiles and combinations of barrel steel + surface treatment on their website, along with links to the vendors where you can purchase each type of barrel. http://criterionbarrels.com/barrels/ar-15
    Thank you, it’s a great barrel.


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  2. #12
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    Quote Originally Posted by Tx_Aggie View Post
    I was going to suggest taking a look at this exact barrel from Criterion.

    The Combo is $390 at Brownells.

    Here's a link:

    https://www.brownells.com/rifle-part...prod78010.aspx

    They use a BCM bolt. You can get the barrel without the included bolt from Brownell's, Optics Planet, and MSR Arms for $269.

    It's also available in nitrided stainless (no bolt) for $297 from Optics Planet & MSR Arms.

    Criterion lists several profiles and combinations of barrel steel + surface treatment on their website, along with links to the vendors where you can purchase each type of barrel. http://criterionbarrels.com/barrels/ar-15
    I really appreciate all the info gents..that nitrided stainless barrel is very much on my list now!
    Question- about the matched bolt. Is it REALLY needed?
    " Be NOT ye afraid of them..
    Remember the Lord, for He is GREAT & TERRIBLE!
    FIGHT for your bretheren..for your sons & for your daughters,
    for your wives & for your households"!

  3. #13
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    This is not the time to cheap out. Buy a new bolt for the new barrel, unless you have one laying around with less than a thousand rounds on it. If you're buying from Brownells, they have this for 50 bucks: https://www.brownells.com/rifle-part...rod105379.aspx

    You want brand name? Here's a DD for 66 bucks: https://www.brownells.com/rifle-part...prod54571.aspx

    Edit: Sorry I misinterpreted your post. For the vast majority of us, you won't need a matched bolt.
    Last edited by Thrasos; 05-12-18 at 16:49.

  4. #14
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    Quote Originally Posted by Thrasos View Post
    This is not the time to cheap out. Buy a new bolt for the new barrel, unless you have one laying around with less than a thousand rounds on it. If you're buying from Brownells, they have this for 50 bucks: https://www.brownells.com/rifle-part...rod105379.aspx

    You want brand name? Here's a DD for 66 bucks: https://www.brownells.com/rifle-part...prod54571.aspx

    Edit: Sorry I misinterpreted your post. For the vast majority of us, you won't need a matched bolt.
    No, I fully agree, and have a brand new ToolCraft nitrided BCG ready and waiting. My question really is, is THAT specific bolt that comes with the barrel really "fitted" somehow..or you just need a new bolt, period?
    How do you fit, headspace an AR bolt & chamber?
    " Be NOT ye afraid of them..
    Remember the Lord, for He is GREAT & TERRIBLE!
    FIGHT for your bretheren..for your sons & for your daughters,
    for your wives & for your households"!

  5. #15
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    I also used a 16" Criterion SS/Nitride barrel on a hunting rig AR.
    It shoots 64 gr. GD's extremely well in addition to 69/77 gr IMI OTM.
    I used a ToolCraft BCG with no issues through a couple thousand rds.

  6. #16
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    A matched bolt has an edge in precision.
    INSIDE PLAN OF BOX
    1. ROAD-RUNNER LIFTS GLASS OF WATER- PULLING UP MATCH
    2. MATCH SCRATCHES ON MATCH-BOX
    3. MATCH LIGHTS FUSE TO TNT
    4. BOOM!
    5. HA-HA!!

    -WILE E. COYOTE, AUTHOR OF "EVERYTHING I NEEDED TO KNOW IN LIFE, I LEARNED FROM GOLDBERG & MURPHY"

    http://i115.photobucket.com/albums/n289/SgtSongDog/AR%20Carbine/DSC_0114.jpg
    I am American

  7. #17
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    I found out that Strike Industries makes a CHF stainless QPQ barrel; from the gas port size my SWAG is DD as OEM. I'd be wary of buying a barrel from them though.

    Criterion makes reputable and affordable precision barrels. The company they outsource QPQ has a lot of experience doing barrels as well. While they make both stainless and 4150 nitrided barrels, the former is more easily machined. Criterion is also one of the few makers that hand laps the bore before QPQ (Faxon for example does not).

    I have a 16" hybrid midlength stainless QPQ barrel with matched BCM bolt, but haven't shot groups with it yet. My only criticism is the gas port size of .080", but that can be addressed with one of BRT's gas ports.

    Sent from my ZTE A2017U using Tapatalk

  8. #18
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    Quote Originally Posted by Straight Shooter View Post
    My question really is, is THAT specific bolt that comes with the barrel really "fitted" somehow..or you just need a new bolt, period?
    How do you fit, headspace an AR bolt & chamber?
    Yes, the bolts are fitted at the time of chambering. It's a little extra precision, but IMO, not much. And really not much, if anything, on paper especially if you handload and control the sizing of your cases. Most of the corps building ARs have boxes of bolts they randomly pull out of and slap into the uppers. A better company will even check the headspace. But mostly there isn't a thou worth of difference headspace between bolts.

    Precision barrels are chambered with a specific bolt. They screw the barrel extension on with a specific bolt in place so that they can control the clearance. Then they chamber the barrel until it will take a GO gauge. Then they install the index pin and drill the gas port. With non-precision barrels, all this is done to spec with no concern for bolt clearance other than it be enough.

    Too much bolt clearance is why some barrels shoot good groups except the first round from a magazine is out of the group. Fortunately, AR15s are not as prone to this flaw as rifles that have heavier BCG groups.
    Last edited by HelloLarry; 05-13-18 at 10:22.

  9. #19
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    Im curious why you're looking for that particular combo? When people look at CHF they are wanting increased durability and longevity, if that is your aim then chrome will be superior to nitride in that respect. When people look at nitride they want the accuracy of an unlined barrel with more durability than just a plain stainless can offer.

  10. #20
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    Quote Originally Posted by vicious_cb View Post
    Im curious why you're looking for that particular combo? When people look at CHF they are wanting increased durability and longevity, if that is your aim then chrome will be superior to nitride in that respect. When people look at nitride they want the accuracy of an unlined barrel with more durability than just a plain stainless can offer.
    I agree with you sir. That said, wouldnt a nitrided SS barrel fit the bill for long range accuracy & durability? This is a learning process for me, and again am open to suggestions & thoughts.
    " Be NOT ye afraid of them..
    Remember the Lord, for He is GREAT & TERRIBLE!
    FIGHT for your bretheren..for your sons & for your daughters,
    for your wives & for your households"!

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