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Buffer Tube questions

Discussion in 'Black Rifle Forum' started by JTLIII, Jan 17, 2010.

  1. JTLIII

    JTLIII

    691
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    Mar 13, 2007
    Okay, so I bought a Magpul ACS stock for my new build and a mil spec buffer tube kit. So, I was thinking about putting a CTR stock on my other M4. It has a commercial tube.

    If I buy a new milspec buffer tube for it, can I use the same castle nut, buffer, and spring?
     
  2. mvician

    mvician Lifetime Member

    3,149
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    Jun 8, 2007
    NW Indiana

  3. JTLIII

    JTLIII

    691
    0
    Mar 13, 2007
    great! thanks. Now I need to decide if upgrading to a mil spec buffer tube is really worth it
     
  4. Kentak

    Kentak

    3,963
    423
    Jan 8, 2006
    Central Ohio
    In *my* opinion, it's not a big deal. First of all, a mil spec tube may be mil spec in dimension only, and not as strong as a "true" mil spec tube. In which case there's virtually no difference between commercial and MS. Technically, a "true" mil spec tube is stronger than one that is not. But--is this forum or any other "black rifle" forum oozing with accounts of broken commercial tubes? Not that I'm aware of.
     
  5. faawrenchbndr

    faawrenchbndr DirtyThirty fan CLM

    36,273
    569
    Nov 24, 2005
    Troy
    Here are the DIFFERENCES,.....

    -Mil Spec
    --7075T-6 forged aluminum
    --7.25" Long
    --1.14" OD
    --.073" Outer wall thickness
    --Squared End

    -Commercial
    --6061T-6 extruded aluminum
    --7.8" Long
    --1.17" OD
    --.085" Outer wall thickness
    --Tapered End
     
  6. bdh_1

    bdh_1 Millennium Member

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    Apr 19, 1999
    Virginia
    I believe Kentac was speaking about the mil-spec diameter receiver extensions made out of 6061 when he stated no difference when compared to commercial.
     
  7. faawrenchbndr

    faawrenchbndr DirtyThirty fan CLM

    36,273
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    Nov 24, 2005
    Troy
    Uh,...did you not read what he posted?
    "there's virtually no difference between commercial and MS"
     
    Last edited: Jan 18, 2010
  8. Three-Five-Seven

    Three-Five-Seven Señor Mombo Millennium Member

    2,729
    34
    Aug 8, 1999
    Great Southwest
    Two things:

    1. Putting a mil-spec extension on both guns will permit you to easily switch the stocks around to know which stock you want on which gun.

    2. Castle nuts are thought of as expendable. I reuse mine when possible, but the "manual" says to change 'em every time. (FYI)