are you sure it has worn out? i have a m77 international that wasnt ejecting and it was the plunger ejector, not the extractor. my fix was easy, i used a bunch of oil on the boltface to flow the brass shavings out the plunger hole. just take a punch or something and press on the plunger to see if its clogged. if its real bad you can drift out the plunger retention pin and really get in there. unless you have had 8000+ rounds through it i cant see you claw wearing out