Hi:
I recently purchased a PWA lower with internals. When I manually cocked the hammer, the hammer hook appeared to hit the sear. I removed the trigger and hammer (don't know what manufacturer) and installed the trigger and hammer from another lower (DPMS or CMT; can't remember). I have four other AR's but have never experienced this problem.
Additionally, when I installed a set of KMS Gen II anti-rotational pins, the connecting bars would not seat properly without hitting the mag fence. In other words, the distance between the trigger pin and the mag fence is too short. I have also encountered this on a new LMT lower but did not have the problem with the hammer hook hitting the sear as the hammer was manually cocked.
I suspect that the holes for the trigger pin were drilled too far forward.
Other than to return the receiver, any suggestions?
Thx,
uranus
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