So I have a 14.5 BCM hammer forged elw upper on a lower I built with a combination of sionics and Bcm parts. I have about 500 rds on it. I originally had an AO precision carrier with a colt bolt in it. As the gun would heat up it would not lock back on an empty magazine. Then would start to short stroke. So I took it home and found the gas key leaked. About a week later I got some things out of storage and remembered I had a BCM bcg with about 100 rds on it in there. So I put that in and went shooting. Failure to lock open again. Although it didnÂ’t completely short stroke and fail to feed from the mag. So I figured it was the upper I contacted BCM cs after a cpl emails back and forth they sent me a pre paid ups label and I shipped the upper and bcg. Once they received it it took one day and I had an email saying that the upper was fine, but the gas key screws were broken. They had replaced the gas key and test fired it and were shipping it back to me. Two faulty gas keys in a row bad luck I guess. IÂ’m glad the upper is fine because itÂ’s very accurate. I also am completely happy with BCMÂ’s response and quick cs couldnÂ’t ask for anything better as far as IÂ’m concerned. Just thought IÂ’d share my experience.
Bookmarks