Problems with new ar

Discussion in 'Rifle Discussion' started by JohnnyD, Jan 25, 2015.

  1. JohnnyD

    JohnnyD
    Vancouver
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    What's up guy? have a question about my new ar. I traded for it like 6 months ago and never got around to shooting it. Finally got it out today and the rifle won't cycle. When firing the bolt doesn't even come back. When I did got it it had a low pro gas block and I had a gun smith put on a railed high rise gas block. Is the gas tube just unaligned? Best way to check it? It's an Anderson am15
     
  2. TapRackNGo

    TapRackNGo
    PNW
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    Sounds like gas tube, gas block issue. If you don't know how to work on it, take it to a qualified gunsmith, maybe somewhere that has a range or place to test function.
     
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  3. IronMonster

    IronMonster
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    yeah, sounds like a gas problem, If the block was just changed I would say its suspect
     
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  4. Capn Jack

    Capn Jack
    Wet-Stern Washington
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    If you've fired it, the scorch marks under the gas block should tell the story. Also, the gas block may have come loose. :eek: Put BLUE Loc-Tite on all of the screw threads.;)

    Buy yourself an AR manual and invest in a few tools. The beauty of the system is, you can do 90% of the work yourself. :D
     
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  5. JohnnyD

    JohnnyD
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    I figured that was the issue. Any tips for getting it to function?
     
  6. Capn Jack

    Capn Jack
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    First thing is to verify the gas tube and gas block are properly positioned.
     
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  7. Medic!

    Medic!
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    Take a length of aquarium tubing. Push in onto the end of the gas tube in the upper receiver.
    Can you blow through it? Is it restricted?

    Do the same to the carrier gas block with the bolt removed. Is it blocked or restricted?

    Do you have gas rings on the bolt?
     
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  8. JohnnyD

    JohnnyD
    Vancouver
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    Well the gas block seemed a little too far forward. Probably be weeks before I get the chance to take it out again but I'll give those a try in the mean time thanks. I do have gas rings on the bolt and the holes are staggered
     
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  9. 223to45

    223to45
    Whatcom
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    Sounds like gas block covering hole.

    Go back to the low block. Or install a FSB.
     
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  10. JohnnyD

    JohnnyD
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    image.jpg Low block is already gone. I Changed the block since I won't have a rifle without iron sights. I think I got it now just need to find some time to try it.
     
  11. JohnnyD

    JohnnyD
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    Kinda pisses me off that I took it to a gun smith to be installed and It was installed wrong though but o well
     
  12. Capn Jack

    Capn Jack
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    YUP! Know how you feel.:confused: Brother took his into one here and the guy couldn't even trouble
    shoot a reversed hammer spring.:mad:

    That's why it pays to invest in a good book and a few tools. Personally, I found a "Chopstick" with a .223 case over one end handy for bumping take-down pins out.;)
     
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  13. JohnnyD

    JohnnyD
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    Not a bad idea at all
     
  14. IheartSig

    IheartSig
    Beaverton
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    Capn Jack, do you have any suggestions for a good book to cover the AR platform and it's mechanisms?
     
  15. IronMonster

    IronMonster
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    I do, the whole series of AR books by Patrick Sweeney. I think there are 4 volumes. Read those 4 and there is no way you won't have a better understanding of the AR platforms
     
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  16. IronMonster

    IronMonster
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    I have all of them on my Kindle, if you are a kindle user I think I can "loan" them
     
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  17. John H

    John H
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    What did you find??
     
  18. JohnnyD

    JohnnyD
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    The gas block was too far forward think I got it right now but got to wait till I can get up the mountain or to the range
     
  19. Capn Jack

    Capn Jack
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    Animal Chimp.gif
     
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  20. Velzey

    Velzey
    Estacada Gunsmith
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    If your taking your firearms to a gunsmith that cannot spot a reversed hammer spring, or a gas block that is out of position...That's really not a gunsmith!
     

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