Mil spec vs Commercial spec stock?

Discussion in 'AR-15 Discussion' started by magnum05, Nov 25, 2012.

  1. magnum05

    magnum05 New Member

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    im wanting to buy a new stock but im not quite sure what the difference between mil and commercial spec is.. i have a bushmaster carbine with an adjustable stock already but want to upgrade to a magpul.. Anyone can help me and explain the difference so i know what i have or need
     
  2. Gatoragn

    Gatoragn Active Member

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    A picture is worth 1k words
     

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  3. JonM

    JonM Moderator

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    [​IMG]

    milspec is stronger because it is a smaller diameter with thicker walls than a commercial tube

    milspec tubes are flat on the rear commercial have a slant at the rear. thats the two obvious by looking features
     
  4. JonM

    JonM Moderator

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    LOL same pic
     
  5. Hoffs333

    Hoffs333 New Member

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    More than likely it will be a commercial buffer tube. I also have a Bushmaster and got a Magpul MOE stock. The difference between the commercial and mil-spec is the mil spec is a bit smaller in diameter, shorter in length and is straight on the back end. The commercial buffer is overall bigger and the end of it is at a bit of an angle.

    ForumRunner_20121125_114523.jpg
     
  6. Gatoragn

    Gatoragn Active Member

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    What is they say about sharp minds?
     
  7. SSGN_Doc

    SSGN_Doc Well-Known Member

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    Be aware that not all commercial tubes are angled on the rear.
     
  8. Overkill0084

    Overkill0084 Active Member

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    A stupid question perhaps, but what problem is the slanted rear the solution to? Heck, for that matter, why create a new spec at all?
     
  9. magnum05

    magnum05 New Member

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    by looking at pics does the commercial always have 6 position and the mil have 4 position? @ Hoffs.. the end of my buffer is flat and is a 4 position.. I guess the best way to find out is to take my stock off and measure the tube? correct?
     
  10. jwalsh66

    jwalsh66 New Member

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    The mil-spec's do come in 6 position. I just got one from larue. I'm sure ther e are other manufacturers that make them also.
     
  11. FullautoUSA

    FullautoUSA Welcoming Committee/ Resident Pellet Gunner Lifetime Supporter

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    Magpie makes both commercial and mil spec.
     
  12. Hoffs333

    Hoffs333 New Member

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    Mine is a 6 position angled. The angle is very slight...only a few degrees

    ForumRunner_20121125_131802.jpg



    ForumRunner_20121125_131743.jpg
     
  13. Hoffs333

    Hoffs333 New Member

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    And as far as I know its a stock Bushmaster commercial buffer. I would definitely measure it
     
  14. Gatoragn

    Gatoragn Active Member

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    :D :D :D :D :D :p
     
  15. FullautoUSA

    FullautoUSA Welcoming Committee/ Resident Pellet Gunner Lifetime Supporter

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    Ha stupid iPad corrects everything, like just now I spelled iPad with a lowercase p and it corrected it
     
  16. Quentin

    Quentin New Member

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    Yeah Busmaster uses the cheaper commercial diameter tube but measure anyway just in case. This is why so many of us recommend milspec ARs in the first place. Very annoying to have to remember that your AR uses oddball sizes on the tube and sight height, among other cost saving issues.
     
  17. magnum05

    magnum05 New Member

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    well is was wanting a 6 position anyways so if my stock tube is commercial would i be able to put mil spec on since the tubes are pretty cheap
     
  18. Quentin

    Quentin New Member

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    Yes, and it's a great idea now since you're buying a stock anyway so no extra cost. PSA sells the milspec tube for $20 last time I checked. It's good to go, I paid a little more and got their full kit that also came with buffer/spring/end plate/castle nut.

    My buddy did this to his BM and they assembled it with gunk on the threads so it was a female dog to remove.
     
  19. magnum05

    magnum05 New Member

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    Yeah I was thinking of getting magpul acs stock and found a mil spec 6 postion tube from I think spike tact for $15
     
  20. Quentin

    Quentin New Member

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    Spikes should be GTG too and you can't argue with $15. PSA has a great price on Magpul stock kits including the tube, spring, buffer, end plate and castle nut. Haven't checked to see if they have the ACS or ACS-L. It might be worth it if you can sell your old stock/tube to recover some of the cost.