I picked up a 1944 dated mauser 98k at the last gun show, and I noticed that the rear band slides foreward along with the mount for the bayonnet, the rear hand guard, and the front guard as well, with minimal effort. My dad and granddad both looked at it and they seem to think there is something missing, or some sort of issue with it. please take a look at the pictures i have attached so you can see exactly what I am talking about. all numbers match with the exception of the bolt assembly and the magazine/trigger guard assembly. Thanks