I fired off an email to Mossberg asking about the lube use before shipping. Hopefully they'll respond.
The Miculek video is awesome. He explains what causes these to have problems. All we did after the failure was clean and lube the barrel, receiver and trigger. I'm thinking a few mag dumps are in order tomorrow.
https://www.youtube.com/watch?v=QfqdygODl9k
Magazine tube carbon build up.
Piston fouling.
