Same issue as mine. The stupid screw holding the laser housing keeps coming loose. Tighten it, fire 50 rounds. Fine. Second fifty rounds, jams half way.
Now the slide won't go all the way to lock as the laser screw is preventing it from sliding. Would it not be fun to have this problem during a life and death situation.... Hey. Mr. Bad guy, can you wait a few minutes till I get this damn thing working again or wait a few weeks till I get it back from SW.
JUNK!