03-29-2022, 05:02 PM
ported45 Wrote:This one closes off enough to not eject. I started one full turn from bottomed out. Backed out until it finally locked open. Didn't on the next shot, so I opened it up another detent click. Didn't lock back.
Took it back home to grab more ammo and lubed the crap out of it thinking maybe it just wanted to run really wet. Back to the range and the first round locked back on the catch and the next didn't. Opened it up another click...no lock back. One more click open and still nothing. Threw in the towel at that point.
Packed it up and called my friend to come get his rifle and contact PSA about a return authorization. He picked it up last night and went straight to UPS to send back the upper.
Thanks to all who offered up advice. My thoughts are that something is misaligned somewhere or the gas port just isn't large enough to begin with. I still don't have the "AR tools" to properly tear into one of these, so I put it back on him to find someone else or ship it back. He called PSA and they said to send it back.
I do hope that they fix it and not just replace. The last trip I had set up a 100 yard target because I was hoping that it was going to be functioning and it put those 4 rounds into a half an inch with 28.0 of 8208 and 123 SST's.
And when I say no lock back, I mean on the bolt catch. Because it locks back on the mag every time that the adj screw is open far enough to get it to eject. In 24 rounds it only locked back on the catch twice.
Over gassing can cause many of the same symptoms as under gassing. Adj gas blocks will leak more gas than standard blocks and can cause short stroking if the system is not gas efficient..Gas tubes can be cracked or have a worn button that can not be seen unless removed or checked with a gas tube gauge. I have seen bolt carrier keys that were loose but would work in one rifle and not another..It is always best to send any problem child back to the manufacturer for warranty work....