I had a Springfield GI that gave me a number of problems out of the box, mostly FTEs. I fired a couple of hundred rounds through it finding that out, then called Springfield. They told me to call back once I had fired 500 – 600 rounds through it (they were very courteous about it). So I burned up some more ammo, then called back and arranged to send it back. They throated the chamber, replaced the extractor and polished the feed ramp. I don't recall the exact turnaround, but I'm sure it was less than two weeks total.
Their customer service is great.
"An armed society is a polite society." — Robert A. Heinlein
"After a shooting spree, they always want to take the guns away from the people who didn't do it. I sure as hell wouldn't want to live in a society where the only people allowed guns are the police and the military."
— William S. Burroughs