Willwood487
11 Jun 2018
Hardened Arms replacement upper Test Fire (Murphy's Law AR15).
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The new Hardened Arms Upper works great. I am able to chamber rounds now. However the Brownells Full Auto BCG is not working. Next I will dive into the BCG and find out what is going on. I have never had an issue like this on any of the previous AR15 builds. People check your parts. I guess with the speed of putting AR15s out on the market Alot of out of spec parts out there. Seems that anything that could go wrong on this build has.
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