It can be fixed with staking or soldering. A little item would be that the pin which retains the firing pin spring cap tended to work unfastened, and needed to be tapped back in place as a person noticed it venture through the rear in the bolt. Winchester replaced that https://highimpactrounds.com/product/winchester-super-x-20-ga-2-75in-20-pellets-3-buck-1200-fps-5-rd-box/