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SBR barrel question

Discussion in 'NFA Firearms and Accessories' started by cottonmouth, Jun 6, 2012.

  1. cottonmouth

    cottonmouth Well-Known Member

    I have a 7" AR and it has a heavy (way too heavy if you as me) barrel. I was thinking about having it turned down to a standard type barrel to save on weight, I'm guessing it wouldn't hurt anything.

  2. Swing

    Swing Well-Known Member

  3. TurtlePhish

    TurtlePhish Well-Known Member

    Just make sure the gas block location stays how it is or gets turned to .750 and there should be no problems at all.
  4. tepin

    tepin Well-Known Member

    Would having it "turned down" be cheaper than buying a new 7" lighter barrel?
  5. fatcat4620

    fatcat4620 Well-Known Member

    You could have it turned down but a new barrel would cost about the same. I doubt you would save more than 6oz either way.
  6. rjrivero

    rjrivero Well-Known Member

    Just for reference:

    Adco charges $65 to recontour behind the FSB or in front of the FSB.

    To do the whole barrel is $130.

    A White Oak Armament 7.5" barrel costs $260.
  7. cottonmouth

    cottonmouth Well-Known Member

    So far the only 7" barrels I have seen were heavy barrels, just looking to shave off some weight. 1/2 pound sounds like a good bit. A friend of mine has a lathe and I am thinking about letting him turn it down then coating the bare metal.

  8. ScottyPotty

    ScottyPotty Active Member

    I turned down my mid length barrel, so I say go for it.

  9. cottonmouth

    cottonmouth Well-Known Member

    Scotty, what did you do for a finish?

  10. ScottyPotty

    ScottyPotty Active Member

    I just cold blued it. I just have plastic HG and everyone in a while put a light coat of oil on it. Its been a few years and no problems.
  11. cottonmouth

    cottonmouth Well-Known Member

    Yesterday we chucked the barrel into the lathe and turned it down. I didn't think to weigh it but I can tell it helped. Threw on a few coats of cold blue and opened up the gas port a little (very little) and put it back together. First test was done on an M16-A1 lower and it dumped a couple magazines with ease. Then I put it on it's registered lower an ran a magazine through it with no problems. Before I opened the gas port it wouldn't run full auto. I really like this little rifle even though it's loud as hell and it tries to set the world on fire from it's muzzle flash!

  12. cottonmouth

    cottonmouth Well-Known Member

  13. TurtlePhish

    TurtlePhish Well-Known Member

    Jeez. How loud is it?
  14. rjrivero

    rjrivero Well-Known Member

    Louder than .44 Mag. (Based on my 7.5" AR vs my 6" Colt Anaconda).
  15. cottonmouth

    cottonmouth Well-Known Member

    You know how a hot .357 magnum pierces your ears without hearing protection? Sortta like that!

  16. TurtlePhish

    TurtlePhish Well-Known Member

    ....ow. Nice fireball, though!
  17. cactus02

    cactus02 Well-Known Member

    Well if you can't shoot them you can toast em.

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