About all I can tell from those pictures is that it is a bolt action rifle. You have pictured everything except the receiver, which is the key to identification.
Based only on the information and pictures, I suspect it is a Deutsche Sportmodell (DSM), based on the B series action. The DSM was produced for youth training in the Third Reich, like similar rifles by other makers. They were not used by the Wehrmacht except on a limited basis for competition, but were used by the Hitler Jugend. The DSM, again like the others, had a stock similar in design to that of the military Mauser Standard Modell and the K.98k.
The stock pictured has, of course, been cut down and heavily modified, but still retains the simulated disassembly disc and sling slot of the K.98k.