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Thread: Shortening a BCM 16" LIGHTWEIGHT barrel?

  1. #1
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    Shortening a BCM 16" LIGHTWEIGHT barrel?

    Unfortunately, I succumbed to the "panic" mentality and bought a 16" BCM lightweight middy upper when what I really want is a 14.5" (LW or Govt profile, still debating this...) with a perm flash hider.

    I guess what I'm asking is if there is enough meat on the barrel to shorten it to 14.5 (or 14.7) and pin a flash hider? It seems as if the barrel has a small swell right at the FH to give it enough of a shoulder.

    Is this possible or should I just sell/trade this upper and wait for a 14.5 inchers to become available?

  2. #2
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    I don't know if you can but, I dont think it's worth it you really wont notice 1.5 inches just shoot the crap out of it.

  3. #3
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    live with the 16 by the time it's shot out maybe new barrels will be avaliable, serious i was craving a 14 settled for the 16 in lw really happy plus you can collect a box full of comps and flash hiders and change them around without hassle to see what you like(BCM2.0!!!)

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    double tap...
    Last edited by ra2bach; 03-26-13 at 21:19.
    never push a wrench...

  5. #5
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    ADCO can do it, I dont know what they do about the shoulder, but they do cut lightweights.........but I wouldnt bother.

  6. #6
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    I don't think you can as the 16" BCM LW barrel has a step up in barrel diameter where it meets the threads.

    but anyway, I don't do 14.5 in a LW barrel or midlength gas.

    to me, the only advantage of cutting and perming a barrel is the better balance resulting from the reduced weight at the muzzle. there is no practical difference in "compactness" of cutting less than a thumbs length off your barrel.

    while there might be a case for cutting a .75" barrel I don't do this to a LW barrel as I think it is already light enough without affecting handling.

    and I don't do 14.5" midlength.

    so if you already have a 16" LW midlength, save yourself the time, money, and trouble and just shoot the best combination out there...
    Last edited by ra2bach; 03-26-13 at 21:22.
    never push a wrench...

  7. #7
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    Shortening a BCM 16" LIGHTWEIGHT barrel?

    Quote Originally Posted by tommyrott View Post
    live with the 16 by the time it's shot out maybe new barrels will be available
    I'm all for shooting the crap out of it, now if I could find some bulk ammo that wouldn't require me to take out a second mortgage on my house or sell a kidney....

  8. #8
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    Shortening a BCM 16" LIGHTWEIGHT barrel?

    There are pros to the 16, such as being able to swap muzzle devices or pull the fsb for a rail install etc.

    I'm curious why you are not a fan of 14.5 mid-lengths?

  9. #9
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    That's what I recently purchased from BCM. I also purchased a 14.5 middy barrel and am having a 'smith swap barrels and pin a BC for me. Put the barrel up for sale or keep it as a spare. No reason to over think anything.
    NRA Life Member, NAHC Life Member, GOA member

  10. #10
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    16" lightweight mid?

    Shee-it, I wouldn't touch a thing.

    The mid-length gas was designed around a 16" barrel and the LW profile is the right answer.

    If it was a carbine, 14.5" all the way. Mid? 16" every time...

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