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
Ladyfriend: "I need help with the leaves in the yard"
Me: "Controlled burn?"
LadyFriend: "I forgot my Boy Scout turned into an infantry officer."