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Quick Question - Milspec Stock on Commercial Tube

Discussion in 'Gear & Accessories' started by DrCox, Mar 24, 2016.

  1. DrCox

    DrCox Hillsboro Member

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    First - Don't flame me, this is a simple question requiring a simple answer, not ridicule ;)

    Recently I was browsing my local pawn shop and I came across a MagPul MOE butt stock for $10. Not caring at the time whether it was commercial or milspec I picked it up because hey, Saved myself $30+/- right?

    The rifle I want to put it on has a commercial buffer tube and it turns out the stock is Milspec.

    Being that I only have $10 invested, is it conceivable that I could just lightly sand or file out the guts of the butt stock and still use it on the commercial tube? Has anyone tried this at all?

    Thanks in advance,

    -DrCox
     
  2. bolus

    bolus Portland Gold Supporter Gold Supporter 2015 Volunteer 2016 Volunteer

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    here is a quick overview of the differences between the commercial and milspec tubes.
    http://www.brownells.com/.aspx/lid=...-Tech-Tip-Mil-Spec-vs-Commercial-Buffer-Tubes

    The commercial tube is 0.03" larger diameter. It would probably take a bit of work to evenly sand the inner diameter of the stock to get it to fit and move smoothly.

    I'd recommend hitting up one or your local guns stores (MKtactical and Oregon Arms and Ammo are near hillsboro). They will both have inexpensive milspec buffer tubes to replace your commercial tube. If you dont have a castle nut wrench Im sure both places would help you install it as well. It's a 30 second process to swap them over
     
  3. Mikej

    Mikej Portland Gold Supporter Gold Supporter 2015 Volunteer 2016 Volunteer

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    @bolus I've also been confused between the mil spec/commercial tubes. What are more common? Which would be most likely on a high end/Low end ARs? Or is it just a complete toss up?

    Now I'm going to mic my one AR from I bought from Curt's.....Looks like mine is Mil Spec. 1.145"
     
  4. bolus

    bolus Portland Gold Supporter Gold Supporter 2015 Volunteer 2016 Volunteer

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    I'd say milspec is more common. Commercial is purely to make a cheaper product. Easiest way to tell is if it has a slanted back end. the way the threads are cut are a little different as well.

    My vote is to always go milspec then you dont have to worry about mixing up parts.
    Buffertube_Specs.jpg
     
    Brutus57, Hdshot and Mikej like this.
  5. ZA_Survivalist

    ZA_Survivalist Oregon AK's all day.

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    For another $15 pick up a milspec buffer tube.
    (Are they even that price anymore haha)
    If your stock was milspec dont tailor it to commercial spec. Thats a whole lot of time that could have been used to do something else.

    Or, sell or trade the stock for a profit or towards one that'll fit your commercial tube. In the long run you'd be better off just getting a milspec tube.
    There is bound to be a buffer tube here on NWFA as well as folks with the tool for the job (spanner wrench)
     
  6. DrCox

    DrCox Hillsboro Member

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    thanks guys for the input.
     
  7. 2A2Dend

    2A2Dend .. Well-Known Member

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    Or, just a thought. If you have a drill bit extension, and a 1-1/4" sanding drum, run it inside the stock to relieve it until it fits the commercial tube.
     
    DrCox likes this.
  8. 308

    308 ΜOΛΩΝ ΛΑΒΕ ΜOΛΩΝ ΛΑΒΕ Platinum Supporter Silver Supporter

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    I've done that in the past because I didn't know there was a difference, so I just Okied it until it fit...lol
     
  9. Brutus57

    Brutus57 Skagit County Well-Known Member

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    Good solution, but if given the choice, always go milspec, because it is pretty universal for making parts by different makers play well together. But for $10.00? I'd have been all over that Magpul part as well.

    Brutus Out
     
  10. Mikej

    Mikej Portland Gold Supporter Gold Supporter 2015 Volunteer 2016 Volunteer

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    Yeah, you could always weight it and use it on your desk as a pencil holder? o_O