It might be fastened with staking or soldering. A little product is that the pin which retains the firing pin spring cap tended to work loose, and needed to be tapped back again in place as one particular saw it venture from your rear from the bolt. Winchester replaced that https://highimpactrounds.com/product/winchester-defender-segmented-slug-12-ga-2-75-in-1-oz-1600-fps-10-rd-box/