My dad sent this gun back in 1944,while spearheading thru Germany. I know very little about militrary guns. It has a 44 on the top reciever ring . All the parts are stamped with the same # 40**. I shot the gun 30 yrs ago with my dad. It shot really well. Now what do I do with it.. He had somebody put a classic stock on it but thats alll. Thanks