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  1. #1
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    Check out this upper receiver and buffer wear... roll with it or ?

    Hey fellas.. little backstory....and Iíll try to not make it as long as that Alamo guy...

    Just a helped a family friends son..that grew up with ours..build his first AR..a 10.5Ē pistol..well that got met juices flowing as I had a running 10.5Ē pistol up until a year ago or so, as I robbed a few parts here, swapped some around and it ended up into a box of about 3/4 of a pistol..

    So now kinda motivated to get mine up and going again..So I dug the stuff out and just checking it out

    From the get go I had problems first with a Aero carrier...another funny back story for another day...
    So looking at the upper and bcg, it has worn slight grooves in the upper...this is under 500rds probably as I kinda got burnt on it and just put it away..

    Alright so couple hundred rds with aero carrier, then swapped in a Rainier carrier.

    Still chewing it up...now I know some wear is all right but in all the ones Iíve had, built or helped..never had one like this..

    So #1 , how much wear is acceptable? Should I just roll with it or get a new one?

    #2 stupid buffer face is getting beat up...from the retaining pin..not sure why as when you close the upper, the bcg pushes back the buffer slightly as itís suppose to.. but itís still beating itself up on the pin?

    Ya ya on the spikes...I built this in 2012íish and never touched anything since..lol..

    Comments, suggestions, etc? Iím the broke bastard and always try to use what I can...till I can..I would of rushed out and grabbed one..but I need a hand guard, trigger and few small pieces still.
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    Last edited by mustangfreek; 22 July 2019 at 02:30. Reason: Spelling..

  2. #2
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    Sorry..Damn auto correct....Title= upper reliever...lol

    Back to topic... should I find another upper? Along with the lower/buffer issue?

    The upper is a fortis, lower is a gen 2 Aero.

  3. #3
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    There's no "Team" in F**K YOU!

  4. #4
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    Who makes the lower? The retaining pin channel looks like itís milled pretty far forward

    As far as the upper (same brand as lower?) Iíll take a look after my drive to work

  5. #5
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    Quote Originally Posted by Joelski View Post
    Thanks for reminding me....Iíve seen These..just had forgot who made them

    Quote Originally Posted by Former11B View Post
    Who makes the lower? The retaining pin channel looks like itís milled pretty far forward

    As far as the upper (same brand as lower?) Iíll take a look after my drive to work
    It probably lay got lost in my verbiage...lol

    Parts list is/was

    Aero std. gen 2 lower
    Old Fortis upper
    Rainier barrel and bcg
    Woa lower parts
    Rainier tube
    Spikes st-2 buffer , unsure of what carb length spring

    Again when I shut the upper , the bcg clearly pushes the buffer off the pin .060 thou or so.. but itís beating the buffer face....weird as I havenít seen any of my others with any damage as mentioned..

    Gun never had a problem..ran fine, just seemed to chew itself from the get go...

  6. #6
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    Can you take a picture of the lower like this:

    Name:  17DADD0B-0553-4487-85CC-FE0835355EEB.jpeg
Views: 206
Size:  81.7 KB

    One picture with the buffer itself installed and one with it removed



    And if TWO BCGs are carving up the upper, it seems like itís out of spec

  7. #7
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    What length handguard do you need?

  8. #8
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    Sounds like an out of spec receiver set. The bottom is doing what it's doing and the upper is combining a tightass fit with slamfucking the buffer tube. I have a Cerro forge upper that didn't like my Fathom BCG, but ran my AXTS one just fine and AFAIK those are from the same fabricator. My guess would be he needs an extra power spring, and at least an H2 buffer to calm down all that pulverizing.
    There's no "Team" in F**K YOU!

  9. #9
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    Quote Originally Posted by UWone77 View Post
    What length handguard do you need?
    Well Itís for this old 10.5Ē RA barrel...So id like a 9.5-10Ē
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  10. #10
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    few Pics of the buffer pin area
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  11. #11
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    Quote Originally Posted by mustangfreek View Post
    Well It’s for this old 10.5” RA barrel...So id like a 9.5-10”
    You don't want that old piece of shit. box it up and send it to me.
    There's no "Team" in F**K YOU!

  12. #12
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    Quote Originally Posted by mustangfreek View Post
    few Pics of the buffer pin area
    That looks off by 3/16" at least!!
    There's no "Team" in F**K YOU!

  13. #13
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    I hear ya joelski...this whole build has been a little off

    The dumb spikes st-2 buffer is a H2 in sense. 4.3oz vs 4.6oz of a true H2.

    Itís just what I had way back when I put this together

  14. #14
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    Another pic minus tube, pin etc
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  15. #15
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    Damn, it's been a minute since I've seen a Black Hole Weaponry, Rainier Arms Select barrel... Let me look in the bin and see if I have a 9.5 floating around.

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