New upper ejection port cover pops open

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    NYRangers917

    NYRangers917

    Active Member
    Oct 6, 2015
    342
    Frederick, MD
    Bought a complete upper and all is great except the ejection port cover wont stay closed. the slightest tap to the upper and it pops open.

    The detent on the door looks/feels nice and springy.

    But the spring itself is strange looking, cant post pics atm but there is a right angle on the short leg of the spring where it rests against the upper.

    Is that normal? Never seen an ejection port spring with a right angle in it.

    Any other thoughts that may help the cover stay closed?

    Thanks
     
    jrumann59

    jrumann59

    DILLIGAF
    MDS Supporter
    Feb 17, 2011
    14,024
    I have come across this on some uppers and dust covers just do not play well. I have seen some dust covers with a slight bow near the détente so the détente only engages the edge of the ejection port. I have seen the lip of the ejection port be slightly out also causing the detent to fully in engage.
     
    jrumann59

    jrumann59

    DILLIGAF
    MDS Supporter
    Feb 17, 2011
    14,024
    I would look at the upper with BCG removed and see how the dust cover detent is engaging the ejection port.
     
    jrumann59

    jrumann59

    DILLIGAF
    MDS Supporter
    Feb 17, 2011
    14,024
    NYRangers917 said:
    I'll do that tonight. Worst case scenario I'll order a new cover kit.

    Less than $15 not a big deal, just miffed that it came brand new like that.
    Click to expand...


    Depending on what you find you may not. I had to tap min a little to get it to "lock" the anodizing may be a little thick right there a little force engineering can fix it.
     
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