1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

AR FCG function test fail

Discussion in 'Gunsmithing and Repairs' started by Bentley4700, Nov 26, 2012.

  1. Bentley4700

    Bentley4700 New Member

    Im assembling another lower. I have installed the FCG (numerous times) and on the function check it cocks fine, releases the hammer fine but when I keep the trigger pulled to check the disconnect, the hammer doesnt catch. The disconnector spring is installed properly with the big side down, firmly in place. I have checked everything in the FCG for correct installment over and over. If I press down really hard on the hammer, sometimes it will catch but it isnt smooth and there is feedback on the trigger when I do it. Thoughts? Would it be safe to try to take a coil out of the disco spring? Or did I just get a bad FCG? Its a PSA.
  2. ApacheCoTodd

    ApacheCoTodd New Member

    How well does the disconnector travel in the trigger without the disconnector spring in place?
  3. Bentley4700

    Bentley4700 New Member

    Thanks, but it is resolved. I stopped in my tracks when it failed the function check. Swapped out 2 other FCG's, same problem. I was convinced I had an out of spec lower... Then I put the safety in... problem solved...:banghead:

Share This Page