It may be set with staking or soldering. A small item is that the pin which retains the firing pin spring cap tended to operate unfastened, and needed to be tapped back again in place as one particular noticed it undertaking from your rear from the bolt. Winchester replaced that https://highimpactrounds.com/product/winchester-target-7-62x39-123-gr-fmj-2355-fps-20-rd-box/