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Old 08-25-2012, 04:27 AM   #11
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Most common problems with new builds is having the disconnctor spring upside down.

Check it again. The fatter end should be on the bottom.

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Old 08-25-2012, 05:23 AM   #12
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Good point about upside down springs, Tikki.

From what I'm hearing, pulling the trigger fires a round then releasing the trigger fires another. If so it sure sounds like the disconnector to me - it grabs the hammer at first but the timing is off so it releases before the trigger sear catches the hammer.

You should be able to prove whether this is the case by removing the upper then cock the hammer and catch it with your thumb as you pull the trigger. Keep the trigger held back and recock the hammer so that the disconnector catches it then release the trigger. Be ready to catch the hammer again with your thumb if it doesn't get caught by the trigger sear. Do this repeatedly and see what happens. This is a test I perform repeatedly on new lowers I build to ensure they operate properly.

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Old 08-25-2012, 01:49 PM   #13
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Quote:
Originally Posted by Quentin
Good point about upside down springs, Tikki.

From what I'm hearing, pulling the trigger fires a round then releasing the trigger fires another. If so it sure sounds like the disconnector to me - it grabs the hammer at first but the timing is off so it releases before the trigger sear catches the hammer.

You should be able to prove whether this is the case by removing the upper then cock the hammer and catch it with your thumb as you pull the trigger. Keep the trigger held back and recock the hammer so that the disconnector catches it then release the trigger. Be ready to catch the hammer again with your thumb if it doesn't get caught by the trigger sear. Do this repeatedly and see what happens. This is a test I perform repeatedly on new lowers I build to ensure they operate properly.
Correct. I did this when it was first put in and it was okay. Now when I do it what happens is as you describe. I have to catch the hammer the second time after releasing the trigger
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Old 08-25-2012, 02:21 PM   #14
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It's currently with my buddy otherwise I'd be tearing it apart right now. Gonna see what he says. Thanks for all your help. Hopefully it will be running soon

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