... maybe I'm not done.
After I got the gun unjammed, I realized it was the link that was broken.
So, if the barrel lugs are fit correctly, what would cause slide stops/links to break right as the barrel is rotating down?
I'm running a 10 pound spring with a buffer, about 170-172pf
Maybe the slide is too light?
I bought it as a used gun, and it ran fine, then all of a sudden I started breaking slide stops left and right. Now, a broken link. Always breaks and locks up at the same point, about 3/8th inch out of battery as the barrel starts to rotate down.