Recently picked up a shooter grade SKS in trade. It is a 53 Izhevesk, which I would of assumed had a regular floating firing pin. Now this one is stamped matching (receiver, bolt, bolt carrier) and has a spring loaded pin. From what I thought i knew about SKS's I figure this should be impossible. I'm away with work for another day so I can get some pictures at a later date. Just wondering what the experts think of this.