StoneLake, the bolt you bought is not meant for your rifle. It comes from a late 1920/early 1930s Walther rifle, before they changed the bolt for the Meistserbuchse and Sportmodell actions to wing safeties. Looking for a proper firing pin will not cut it. Your rifle was made after January 1940. I would advise you to visit the K98k link I provided above. The participants specialize in all types of .22 trainers including Walther.