Brand new upper and the BCM lower was just shot shortly probably around 500 rounds with another BCM upper (14.5, FSB, Mid-length) that had no issues with that previous upper. I'll be going to the range tomorrow with my other never fired BCM rifle (14.5, FSB, Mid-length) and my older (14.5, FSB, Mid-length) with no issues with over 2k rounds ran. I'll be swapping out BCG's and Factory New lowers.


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