I'm waiting for a new (to me) M 57 Tokarev to come in and am having trouble finding much information about the M57. Does anyone know where I can get detailed parts breakdown or diagrams of that model? Also, I've seen many people on many forums ask about parts interchangability between the M57 and other models of Tokarev tt and derivitives -- not magazines; that horse has been beaten enough. Parts other than the frame, firing pin assy and magazines. Do the hammer groups and barrels interchange, etc.?