It's probably homesick for Turkey - after all, exactly what is expected from a cut-rate firearm ?
I'm sorry, but I can't help but feeling that anyone buying one of those, or one of the Savage Gold Wings, got exactly what they wanted - a cheap gun - when, for only a few hundred $$ more, a pristine/used example of one of the world's gold standard O/U's (like a Beretta BL3 or SKB) could have been had.
Send it back to Mossberg, under warranty - per Federal Law, it's legal for any gun owner to do so directly, w/o going through an FFL.
Heck, if you call them first, they might even mail you a pre-paid shipping label.
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