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AR15.COM
AR Sponsor
11/30/2012 6:58:00 PM EDT
I have now broken 2 trigger pins with less than 400 rounds through my pistol build. The tail of the hammer is hitting the disconnecter leaving an obvious mark and denting it up a little.

specs:
stag arms lower
dpms LPK
standard carbine buffer
ar stoner 7.5 inch barrel (5.56)
RRA M16 BCG

I can think of a few things it could be, but I'm not sure where to start. Are there any known causes for this?
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