Hammer question on a lower build.

Discussion in 'AR-15 Discussion' started by Serapis, May 12, 2013.

  1. Serapis

    Serapis New Member

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    I just built my first lower from scratch and I have a question regarding the hammer. This is a spikes enhanced LPK in a DPMS lower. The hammer is super stiff to the point where it will sit halfway between cocked and fired.


    image-2053378552.jpg

    When I fire it (without letting it strike the lower) it seems weak. Should I assume that this is a symptom of a brand new assembly and just lube it up and try and break it in, or is there a bigger problem? Mechanically everything seems ok. I can cock the hammer and pull the trigger. It just doesn't seem loose enough to strike with much force.

    Thanks.
     
  2. rifleman1

    rifleman1 New Member

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    you might need check the side wall tolerences i always take a dremel and cclean up the sides a little if its to tight.
     

  3. Quentin

    Quentin New Member

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    Better double check the hammer spring/installation. No way the hammer should catch like that, it's not a 1911, no half cock!
     
  4. SSGN_Doc

    SSGN_Doc Well-Known Member

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    What Quentin said.

    Make sure the legs of the springs are oriented correctly. Make sure the hammer can rotate on the pin freely before it is installed. Make sure the anti-rotation devices on the side are not causing problems.
     
  5. Triumphman

    Triumphman Active Member

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    Being your first build, did you use any oil on the Pins? Sounds like Hammer and other items may be dry. Give those suckers some oil, and I'll bet you won't have any hangups. Also Hammer Spring, if not installed correctly will give weak strikes, and possibly hangup, but with KNS Pins, you wouldn't know, because the Pins wouldn't pop out, like stock pins would/could.
     
  6. Serapis

    Serapis New Member

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    Thanks all for the advice. The springs are installed correctly. That I know for certain. I think that the problem is friction between the pin and the hammer. I have not yet lubricated the trigger system. I will do so tonight and report back on whether or not the hammer is still sticky. I guess I just didn't figure I'd have that much friction.
     
  7. Serapis

    Serapis New Member

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    Turns out it was just dry. I'll take my 50 lashes for being an idiot without complaining.
     
  8. Quentin

    Quentin New Member

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    Man I've never seen one dry enough to catch like that! Keep an eye on it.
     
  9. ZombieKiller83

    ZombieKiller83 New Member

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    If it makes you feel better, I forgot to put in the disconnecter on my first build ;). Good thing I field tested it before touching off rounds
     
  10. Garadex

    Garadex New Member

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    That would've been fun to find out at the range.