Hoban #45

I know this is a long shot but does anyone know how to get the bolt apart to replace the firing pin? there is a knob on the back of the bolt you pull back to cock the rifle. There has to be a way to get the spring in there but its not obvious. Looks to be a solid piece to me. Any help would be greatly appreciated.
Gil :banghead:

Look for a cross-pin in the bolt body holding the striker assembly in the bolt.

rc