Check and see if the barrel has been changed or evidence of re-barreling. A LARGE number were converted to 7.92mm in Belgiumicon with the receiver notched for the longer 7.92mm cartridge. I wonder if due to the poor sales that the remainder were just put back into original calibre but had been modified with the cut. The conversion price did not justify the additional price and 7.92mm ammo was not that common in North America after WW II other than what was brought back by dad and grampa. Surplus ammo did not start to hit the streets in bulk until the early and mid 60's.