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9/13/2009 4:15:11 PM EDT
I was looking at a used SW ar and the take down pin was so tight that I had to use a punch to push it through.  The BCG also seemed sluggish.  IS this really tight tolerances or is somehting not exactly right?
9/13/2009 4:22:30 PM EDT
[#1]
Quoted:
I was looking at a used SW ar and the take down pin was so tight that I had to use a punch to push it through.  The BCG also seemed sluggish.  IS this really tight tolerances or is somehting not exactly right?


ive never tried racking the bolt on an S&W M&P but was it lubricated or was it completely dry? if it was dry that might have been the problem.
9/13/2009 4:38:58 PM EDT
[#2]
mine was tight when new, but a couple thousand rounds down the pipe took care of that.
and only two failures, both ammo related
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