Chromoly Barrels

Discussion in 'AR-15 Discussion' started by AznZOhAn, May 19, 2012.

  1. AznZOhAn

    AznZOhAn New Member

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    Looking for advice and wisdom. I'm building my first of two or more ARs. I have a Mega Arms Gator lower and a Vltor MUR upper on the way, but I am having problems choosing a barrel. I know the specs I want: 4150 chromoly vanadium, chromed bore and chamber, M4 feed ramp, 16" with mid length gas system, medium contour, and threaded for muzzle devices. I've narrowed my choices between DD, BCM, Armalite, spike, or criterion. Which is the best of these or is their another I've missed that's not going to break my wallet. My 2nd will be the same specs except 18" with rifle length gas or 20".
     
  2. JonM

    JonM Moderator

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    rra uses wilson barrels even the chromed ones are pretty damn accurate. they are cut for wylde chambering.

    http://www.wilsonarms.com/index.htm

    manufactuer site. you need to go through someone like midway rra brownells or another distributer as ordering from wilson you need to be in lots of 100ea.
     
    Last edited: May 19, 2012

  3. AznZOhAn

    AznZOhAn New Member

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    I have a RRA and I agree, it shots great. I don't think RRA has a medium contour with a mid length gas, I could be wrong.
     
  4. JonM

    JonM Moderator

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    they arent the only source for those barrels. im not trying to sell ya rra. you just didnt lst em :)
     
  5. AznZOhAn

    AznZOhAn New Member

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    RRA makes good stuff and I might use them on this build.
     
  6. AgentTikki

    AgentTikki New Member

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    well

    From your choices, its seems that you want a precision type rifle right?

    That Vltor MUR upper aint cheap, and is heavier and stiffer (flexes less) than a standard forged upper. So If you are choosing a precision build, why not go with a stainless barrel?

    One barrel you may have missed is a 20" rifle gas, ar15performance.com 1/8 5r rifled, melonited. I just helped my friend build one last week. The only bad thing I have to say about it is that they thread it with a 3/8 x 24 which is common for .308 muzzle devices, so you'll have to get a 308 or 6.8 muzzle device. We haven't had a chance to break it in yet but there's a lot of good reviews posted on the 'net. Oh and at $190 it won't break the bank. You can also buy a properly headspaced milspec bolt from them. I'd check it out.

    Unfortunately my friend will not be able to shoot for a few weeks. So I won't be able to get you a range report anytime soon.
     
  7. MikeJK

    MikeJK New Member

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    DD makes a barrel that tapers, thick to thin, from nut to muzzle.
     
  8. AznZOhAn

    AznZOhAn New Member

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    I don't want stainless because chromoly lasts longer.
     
  9. AgentTikki

    AgentTikki New Member

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    Then you wanted a treated barrel. Melonite makes the most sense for your requirements. It won't really matter what the rest of your barrel is made of whether CM CMV SS etc so long as the surface is hard. Chrome or melonite makes a hard surface. Melonite is better for precision oriented builds.

    I'm assuming that you don't reload right? How much match grade (expensive) ammo are you planning on shooting? What kind of ranges are you planning on shooting? What kind of groups are you looking to get?
     
  10. AznZOhAn

    AznZOhAn New Member

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    I don't shoot too much expensive stuff, but I do on occasions. I plan on taking the 16" out to 300+ yards and the 20" out to 500+ yards. I've chatted with a few metallurgist and done a good amount of research and thats why I wanted to go with 4150 CMV chrome lined bore and chamber. I haven't looked too much into the melonite finish, but I will look into it. I want something accurate and reliable. I've heard stainless is supposed to more accurate, but I've also heard operators using BCM barrels and DD barrels shoot some pretty tight groups.
     
  11. AznZOhAn

    AznZOhAn New Member

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    I'm actually looking into the DD 18".
     
  12. AznZOhAn

    AznZOhAn New Member

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    I'd really like to see reviews on criterion barrels, they peaked my curiosity.
     
  13. purehavoc

    purehavoc New Member

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    Any idea what you want for a twist rate ? That will narrow down some of your choices out there . Personally if I was going to build a precision build I would be looking at a 1:9 stainless , but since you want something a little harder that will last longer I would say go without a a treated barrel ,then melonite with chrome being my last choice for a precision build
     
  14. AznZOhAn

    AznZOhAn New Member

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    1 in 9 or 1 in 8
     
  15. AznZOhAn

    AznZOhAn New Member

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    Who make melonite treated barrels
     
  16. MikeJK

    MikeJK New Member

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    ARP AR15Performance.com
     
  17. AznZOhAn

    AznZOhAn New Member

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    Are they good quality barrels?
     
  18. Fixer

    Fixer New Member

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    longer then what... please define your requirements here.

    How much are you shooting at one time?
    How many shots will be fired before cleaning occurs?
    How will the barrel be maintained?
    What accuracy level are we talking about?

    Exactly what about 4150CMV is right for you...or why is it a must? You need to remember 4150CMV has a potencial fatal flaw in it... Done wrong its an accident waiting to shread your arm into pieces. This is even after it's been MPI tested. If you are not willing to pay top dollar for a 4150CMV barrel from FN or Colt, I wouldnt do it. Period. I dont care who else is making and selling them unless they also provide a print out of the mil-b-11595e testing report. END OF STORY... Without that report, in my hand, with the barrel..do not pass go, do not collect $200.

    I would go with 4140CM Melonite treatment over 4150CMV anyday...even a Colt or FN one. Look at CMMG( <- now hot) or S&W
    Looks like S&W doesnt sell the barrels alone. The only ones they Melonite QPQ treat are the higher end ones as seen in their catalog HERE starting on page 21 with the M&P15T #811041. So look to buying their full line upper for the upgraded barrel.
     
    Last edited: May 20, 2012
  19. AznZOhAn

    AznZOhAn New Member

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    Thanks for the safety warning, I didn't know that. I have looked into FN barrels on spikes site, but what bravo company barrels? Where can I get a S&W barrel?