Any manmade item can and will fail at some point, even man himself.
This is why I "test" each and every firearm I carry and expect them to fail. That's one of the reasons I carry a BUG. I myself would be sending the gun back to the manufacturer for repair.
After getting it back I would proceed to do a "break-in" procedure on it. I won't go into the whole program here, but have posted it before. Let me just say, it involves 700 - 1,000 rounds if it's an autoloader.