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Thread: Aero Upper won't fit

  1. #51
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    Quote Originally Posted by DirectDrive View Post
    AO Precision and Aero Precision are two different companies.
    Lets throw them under the bus for the right reasons.

    I've never dealt with AO.

    The Aero Precision lowers I've dealt with were just about perfect.

    There seems to have been a change in ownership/culture up there at Aero as they were amongst the first adopters of cannibal pricing during this panic.
    They have ignored their dealer's back orders while price gouging product via direct sales.

    I will never buy a new Aero receiver because of the above.
    Many others will have long memories as well.
    I think they are same (now as one bought the other).


    C4

  2. #52
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    Looks different based on their website info:

    Advance Ordnance (AO Precision) - a Juno Company
    http://www.aopmfg.com

    Corporate History
    AO Precision was originally founded in 1982 as Advanced Ordnance, Inc. The company’s original business focused on making machined parts for Colt, SIG Sauer, FN, Smith & Wesson and OF Mossberg.

    Since Juno Investments LLC acquired AO Precision in 2004, Juno’s investment of capital into machinery and equipment has improved the efficiency and productivity of the company, resulting in double-digit sales growth and an expanded workforce. The company has widened its customer base beyond ordnance manufacturing to include agricultural, marine, automotive and medical OEMs.

    AO Precision Manufacturing LLC is a reliable partner to the world’s leading aerospace and defense companies. Our AS9100-certified, Florida-based, build-to-print precision machine shop is Nadcap accredited and ISO 9001:2008 compliant. It specializes in close tolerance contract machining of carbon and stainless steels, super-alloys, plastics and phenolic resin compounds. We provide turnkey production solutions that start with design assistance and continue with prototyping, CNC milling & turning, finishing, phosphating, anodizing, laser etching, assembly, inspection, and packaging. Our engineers design and produce special tooling, fixtures, and gauges to ensure that your order is competitively priced and meets tight production deadlines.

    Related Companies
    AO Precision also draws upon the complementary resources and expertise of three sister companies under the Juno umbrella:

    Galion LLC, a build-to-print source for screw-machined parts for the automotive, commercial, and defense industries. The company’s equipment includes single and multi-spindle turning, CNC turning, and Swiss micromachining. Centerless grinding allows Galion to repeatedly hold tolerances to .0002″. Galion is ISO 9001:2008 certified. Its 100,000 square foot plant is located in northwest Ohio.

    Southeastern Metal Products LLC (SEMP), a metal stamping and fabrication company. SEMP’s manufacturing and engineering expertise enables the company to manage any type of project ranging from build-to-print to assisting in product design for manufacturability. SEMP’s customers include companies in the telecommunications, health and safety, trucking, off-road vehicle and agriculture industries. SEMP is ISO 9001:2008 certified. The company’s 100,000 square foot facility is situated in Charlotte, North Carolina.

    Optim LLC, a medical device manufacturer, has an in-house machining operation, Optim Machining Services (OMS). OMS is an ISO 9001:2008 and ISO 13485 certified contract services company specializing in close tolerance CNC turning, milling and drilling for the medical industry. The company operates out of a 5,000 square foot facility in central Massachusetts.






    Aero Precision
    http://aeroprecisionusa.com

    Founded in the early 1990’s as a simple job shop in a garage, Aeroprecision got its start supporting Boeing’s offload work.

    Aeroprecision quickly gained a reputation as the “go-to” shop for contracts and projects from other vendors that were either late or considered too difficult for them to manufacture. But, thanks to the talented team at Aeroprecision, these challenging projects became our forte.

    Today that tenacity and passion for perfection drive us to continue building the best products on the market. Our dedication to our products, however, translated well in our commitment to our customers. We know that building a great product is only half of the relationship. We’re committed to providing our customers with the best product at the best price right when they need it. It’s this kind of integrity that translates to great value to our customers and sets Aeroprecision apart from the rest of the field.
    Last edited by txbonds; 02-14-13 at 13:52.

  3. #53
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    Quote Originally Posted by bossman3 View Post
    UPS delivered my stripped Aero Precision Upper and I tried connecting it to my Delaware Machinery Lower. Front take down pin fits perfectly but the rear won't go into the lower.





    I have another upper coming in within the next few weeks. Am I SOL or do I need a new lower? DPMS LPK is installed in lower.

    Sent from my HTC Sensation 4G using Tapatalk 2
    Call the companies and raise hell.

    Next time buy a Colt, it will be made right.
    Ken Bloxton
    Skill > Gear

  4. #54
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    Just start with sand paper on a flat surface and remove material lightly on both sides until it fits. I would rather just get it to fit the. Send it back. It's not that big of a deal in my opinion.

  5. #55
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    If you decide to keep it and file/sand down the sides of the lug to make it fit, do not be concerned in the least bit of excessive wear between the lug faces and the sides of the lower leading to some imaginary excessive slop. We're not talking about some high speed sliding surfaces. There is no loading between these surfaces. You're just opening and closing the upper for cleaning, lube, maintenance, etc. There's more wear between the pushing and pulling of the takedown pin and the lug hole and that's pretty miniscule to begin with. Whenever you lube your pivot and take down pins, that lube will migrate all over the place, including the sides of the lug. Unless you are obsessive/compulsive about the very little "wiggle" between upper and lower, I would not give it a second thought.

  6. #56
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    Quote Originally Posted by Eric D. View Post
    Looking at a lower drawing I dug up (unknown source) the slot is dimensioned from the longitudinal centerline of the lower as 0.250 +/- 0.002 in. That's a max width of 0.504in. and a min of 0.496in.
    The Colt lower drawing I have (which may or may not be correct) says that spec is 0.500 + 0.000 -0.004

    That means anything 0.496 to 0.500 is acceptable, and anything outside of that is not.

    I hope this helps.

    Joe Mamma
    "Reliability above all else"
    NRA Certified Pistol and Rifle Instructor, Life Member
    Glock Certified Armorer
    Beretta & Sig Sauer Certified Pistol Armorer
    Colt Certified 1911 & AR-15/M16/M4 Law Enforcement Armorer

  7. #57
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    If that is the case, his lower is out of spec.
    Quote Originally Posted by scottryan View Post
    Anybody that owns or sells pistol versions of assault rifles is a bottom feeder, irregardless of the ban status of certain ammunition.

    They are illigetimate weapons that have no real purpose other than to attract retards to the gun community.

  8. #58
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    Aero Upper won't fit

    Quote Originally Posted by polymorpheous View Post
    If that is the case, his lower is out of spec.
    Yes it is. We shouldn't be throwing AP under the bus for it. My AP uppers measure exactly the same as my DD, BCM, Palmetto and Noveske uppers do, .4980"


    Sent from my iPhone on tapatalk

  9. #59
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    Quote Originally Posted by AKDoug View Post
    Yes it is. We shouldn't be throwing AP under the bus for it. My AP uppers measure exactly the same as my DD, BCM, Palmetto and Noveske uppers do, .4980"


    Sent from my iPhone on tapatalk
    As much as I don't like Aero's business practices, the smart money is on the DM lower being out of spec.
    But hell, good opportunity to hammer Aero.....some more.


    Last edited by DirectDrive; 02-15-13 at 11:06.

  10. #60
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    My friend almost sprung for one of those Delaware lowers for a build but I told him to wait for an Aero instead after my good experience. I'm glad he listened.

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