As far as run-away, that's a more serious issue that can get one
in a lot of trouble with BATF...it is possible that there was a faulty
sear responsible for it all, a bad batch, perhaps...hopefully...

S&W's current fix involves replacing the trigger, sear, and all springs
involved in Fire Control...which makes me wonder if it was just
a simple design issue...or again, maybe a mis-spec'ed run of parts...

But the amount of times it has happened with the 15-22 at events is enough
to say it's far from a knee-jerk reaction. It's a serious problem.

IF ANYONE HAS ANY DOUBTS about their rifle,
call S&W, have them send you a label, and send it in for repair.
Evidently the new parts prevent the chance of run-away from ever happening again.

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Marlin & Calico Specialist