I've good exprience with Mossberg customer service once I finally made it past the automated greetings and such.
Only downside is they aren't big on communicating past the intial contact.
As in, I talked to them, shipped my gun to them, and didn't hear anything out of them until the FedEx guy came knocking at the door.
NRA Life Member
"Had King Kong showed up in Texas, Frank Hamer would have taken him down with his Model 8 in .35 Remington...well, he was kind of big, so maybe his BAR"