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Thread: Aero Upper won't fit

  1. #81
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    Can someone measure the rear lug of their Aero Precision upper? I needed to compare with others before I complain to them as mine seems to measure .499". I will borrow a friends calipers to verify this in case mine are not accurate.

  2. #82
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    .4985 - .499 No fitment problems on my Umbrella or Stag lower
    Last edited by clbme; 03-08-13 at 17:18. Reason: double-check measurement

  3. #83
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    Aero Upper won't fit

    Thanks. My lower is .497". What is more recommended - shaving off the lower or the rear upper lug?
    Last edited by gesundheit; 03-09-13 at 02:21.

  4. #84
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    Quote Originally Posted by C4IGrant View Post
    BCM. Colt. Noveske. DD.



    C4

    Gee, didn't see that coming!
    - Will

    General Performance/Fitness Advice for all

    www.BrinkZone.com


    “Those who do not view armed self defense as a basic human right, ignore the mass graves of those who died on their knees at the hands of tyrants.”

  5. #85
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    Quote Originally Posted by C4IGrant View Post
    It can happen to anyone and I really don't have a problem with that. My issue with AO is how they handle the problems when they are brought to their attention.



    C4
    Are you saying that AO and Aero are the same?

    As far as I can tell, AO is in Fla, and Aero is in Washington.





    From the AO site though;
    AO Precision supplies many of the most respected of the AR-15 rifle producers. These include Alexander Arms, Bulldog Barrels, Del-Ton, DSA, Krieger Barrels, Lothar Walther, LaRue Tactical, LWRC, Noveske, O.F. Mossberg, Primary Weapons Systems, Rock River Arms, SIG Sauer, E.R. Shaw Barrels, Smith & Wesson, Spike’s Tactical, Wilson Arms and Wilson Combat

    http://www.aopmfg.com/index.php/industries/firearms/
    Last edited by Swstock; 03-09-13 at 18:43.

  6. #86
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    Quote Originally Posted by gesundheit View Post
    Can someone measure the rear lug of their Aero Precision upper? I needed to compare with others before I complain to them as mine seems to measure .499". I will borrow a friends calipers to verify this in case mine are not accurate.
    As I posted in my other post .4985 to .498 on mine. Yours is on the tight side of spec, but it would run with any of my lowers I have in possession right now.

  7. #87
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    I just went through my box of Aero stripped uppers I received recently.

    They were all within .002 of each other.

    On the practical side of this issue...

    In the AR competition world I've seen guys reject uppers that were more than .001 out of spec. They want them TIGHT!.

    I've also seen guys bring rubber mallets with them to the range so that they can open and close their receivers.

    It all depends on what's important to you.
    Quote Originally Posted by markm View Post
    But you should have enough mags that you don't need to see a grief councelor if you destroy or damage one.

  8. #88
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    Quote Originally Posted by Swstock View Post
    Are you saying that AO and Aero are the same?

    As far as I can tell, AO is in Fla, and Aero is in Washington.


    Bump. Id like to get my question answered.

    Based on this thread, it seems to me (just an end user) that a bad experience with a company called AO Precision, was used to somehow blame an out-of-spec lower, on a company that does not only offer IMO a great product (Aero precision), but has nothing to do with the company referenced that the person actually had problems with (AO).

  9. #89
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    Quote Originally Posted by AKDoug View Post
    As I posted in my other post .4985 to .498 on mine. Yours is on the tight side of spec, but it would run with any of my lowers I have in possession right now.
    Thanks. I will shave off a little on the rear lug to make it fit the lower. Better to shave steel than aluminum.

  10. #90
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    Guess ill give an update. I just recived a stripped aero upper a few days ago. I test fitted to my stripped aero lower everything seems to fit very well. Maybe slightly better than my LMT. It well be awhile before I build the upper but every thing seems to be great so far.

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