It can be fixed with staking or soldering. A little item is that the pin which retains the firing pin spring cap tended to operate unfastened, and needed to be tapped again in place as a person observed it job with the rear of your bolt. Winchester replaced that pin https://highimpactrounds.com/product/winchester-super-target-12ga-2-75in-1-1-8-oz-8-shotshell-1145-fps-25-rd-box/