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Roll pin wear

Discussion in 'Black Rifle Forum' started by skt4271, Nov 9, 2011.


  1. skt4271

    skt4271
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    Wondering if these marks are normal wear marks, or is some thing off. The weapon functions fine, just dont want to have premature wear.

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  2. faawrenchbndr

    faawrenchbndr
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    Normal,......I've always had a spare cam pin ot two in the range box.
    I've never seen one shear,........yet.
     

    #2 faawrenchbndr, Nov 9, 2011
    Last edited: Nov 18, 2011
  3. skt4271

    skt4271
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    Should I lube it more?
     
  4. MStarmer

    MStarmer
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    It's one of the main places to run "wet". Google some of the maint docs for AR-15's or look for the "keep it running" done by swat mag. I posted a link to it in another thread I think.

    found it;

    www.ar15.com/content/swat/keepitrunning.pdf
     
    #4 MStarmer, Nov 9, 2011
    Last edited: Nov 9, 2011
  5. JBaird22

    JBaird22
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    The correct nomenclature is "cam pin" and those marks are normal. Shoot enough and a line will form where the bolt pivots on the cam pin.
     
  6. skt4271

    skt4271
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    yeah i was wondering if i should worry about getting the BCG too wet. i was worried it would affect my firing pin.
     
  7. american lockpicker

    american lockpicker
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    I run mine soaked and it functions fine. I clean it every 90 rounds or so.
     
  8. crazymoose

    crazymoose
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    Assuming that's the POF roller cam pin, or something like it. The normal cam pins are wear items that should be replaced every few thousand rounds. Don't know what the lifespan is like for this type of pin, but it's a part that takes a lot of stress, so wear is to be expected. And yes, keep it lubed. It's one of the parts on the AR that needs lubing the most.
     
  9. faawrenchbndr

    faawrenchbndr
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    It can not be over lubed,.......the BCG will expell what it does not need.
     
  10. cciman

    cciman
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    I'd wait to at least 97.

    No seriously, 497, maybe 897... Piston.

    Silicone grease works well too, does not dry, thin, or burn off.


     
  11. skt4271

    skt4271
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    yea, its a POF, i'm a recrea shooter so i only shoot every other saturday. hell even less now its cold. i guess i should have a couple spares.

    yea its a piston, i like that is easy to clean. mostly wipeable, but i clean clean it anyway.