Gewehr43, duv44 block d g43 all matching, rare milled bolt housing

Duv G43, all parts match, and it is in excellent condition. It is a true holy grail for anyone who loves G43. It has a milled bolt housing, which basically solves the G43 over-gassing problem because milled steel is much more robust than stamped steel. According to my research, the G43 milled housing appeared in January 1945 productions and very late B-L M productions, and a small number of 1944 production only by B-L M in duv 44 "c" and "d" blocks. The scope on G43 does not match with the gun, and the mount, although it appeared old but is different from the standard mount. I have received questions regarding the scope and scope mount. The scope is real zf4, but the mount is a really weird one that I couldn't find any other example of this mount. The guess I have is that it is experimental or field-made. The mount is old and rough, and has some unrecognizable number markings. The price is reduced, and if you are interested, please give me your offer. Feel free to ask for more pictures.