The Gen 2 Stormrider I recently bought falls way outside the range of serial numbers noted. Sorry for the inconvenience to those who have the issue. I couldn't find a description of what exactly is failing. Could be a bad manufacturing tolerance or possibly a materials issue. It seems that this is being handled as well as any such incident can be handled-a recall was announced and the repair part is being made available.
I noted before, when posting about the Gen 1 trigger, that the safety bar that comes off the trigger is not quite as wide as it should be. The trigger blade can move a noticeable amount before that bar contacts the safety itself. The mechanism is VERY similar (identical?) between Gen 1 and Gen 2 with the exception of the screw arrangement. With a two screw adjustment that is set with too little first and second stage travel the trigger could move the sear to near firing with the safety on. Releasing the safety or bumping the gun could then cause an accidental discharge. I solved this issue on the Gen 1 by putting a "shoe" over the trigger bar to make it touch the safety with little to no movement. Granted, such shouldn't have to be done but mistakes do happen.
For those that receive the replacement part, a picture of the two triggers one just below the other could answer the question. In any event, if you are effected then get the repair part and install it and the problem should be solved. It would take less than 5 minutes to do.