I agree with all your points and mostly the highlighted part that ONLY those parts with WaA acceptance are wartime leftovers. Everything else is likely post war. It really highlights the externally supplied (at long distances) the stamped bottom metal and points to those 'winter trigger guards' since they very quickly ran out of parts on hand and had given up production for MO and LU supplied parts.That believe that it was only left over parts from war is unreal, as large numbers were made postwar, easy way Brno plant was a main plant and a completation firm, P.Bystrica delivered some parts only. They could had about 10000 parts for other month may 45 prepared, in may of 1945, since US bombing raids 1944/45, and problem by rails delivering and any other goods distribution, to believe that they produced the new rifles from spare parts is unreal, only old receivers are swp 45 probably?? even this is not confirmed, as the postwar switched back to dot 45 and dou 45, problem is that major material and rifles were confiscated by liberating soviets, same as in PB, most real even mashines were captured. Parts which have E/63 one proof or other A80 proofs are left over parts, all other wout german markings are already new postwar production.