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I have put together an AR-15 lower before, now i'm building my first 308 AR using a JD machine lower.
I'm using a DPMS lower parts kit. Using this guide http://www.ar15.com/content/guides/assembly/lower/
The bolded part of the quote is where I'm failing in the function check.
I'm using a DPMS lower parts kit. Using this guide http://www.ar15.com/content/guides/assembly/lower/
FUNCTION CHECK
Verify that hammer locks to the rear when pushed back.
Verify that hammer pivots forward when trigger is pressed.
Without releasing the trigger, push the hammer back again and verify that it locks (caught by disconnector).
Releasing the trigger should not cause the hammer to pivot fully forward (caught by trigger).
Hammer will fall when trigger is pressed.
Verify that hammer locks to the rear when pushed back.
Verify that hammer pivots forward when trigger is pressed.
Without releasing the trigger, push the hammer back again and verify that it locks (caught by disconnector).
Releasing the trigger should not cause the hammer to pivot fully forward (caught by trigger).
Hammer will fall when trigger is pressed.
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