They will all be shredded. In my short 8 1/2 years carrying one I got my 1st one replaced at right around 11,000 rounds due to locking back with rounds still in the magazine especially shooting one handed but often with a two handed grip. That issue started around the 6k mark and approx 3k after putting a WML on it. Fresh magazines would help but never cure it. My 2nd one was ok for a bit then started doing it again...
Good riddance!