I fired almost an entire 75rnd pmag in groups of auto. But the battery inside my retractable stock was not fresh and had been used for test-shooting and had been sitting in the rifle for a couple days.
I did not hear any"clicking sounds" when the trigger initially froze up, nor did I hear anything rattling around inside. As soon as I connected the fresh battery, it worked A-OK.
This is actually the second time this has happened. The first time I just left the rifle and it went back to normal about 30min later...
Thanks for everyone's help and past experiences/observations.
Much appreciated
