My 858 started out fine... absolutely love it.
HOWEVER, it's non-functional right now. I had it out the other day, and up around 300-400 rounds through it total, the trigger suddenly isn't releasing anything... normally when you pull the trigger, it releases the striker, with that satisfying 'click' (or 'boom' if there was a round in it

)...now, instead of a well-defined break, you get a sort of grinding feeling, and it feels like the striker isn't moving forward. Also can't tear it down to see what the problem is (I suspect because the striker is still to the rear?)
any suggestions? Help!