 Some stocks were salvaged from existing surplus and show artificer repairs where rotted or damaged wood has been replaced.This repair is especially evident with the recoil draws (the area the receiver contacts when recoiling after the shot) that often failed over time due to the rifle being rack-stored butt down / muzzle up, which allowed oils and grease to migrate downwards into this critical area.The weapon was produced at a rate between 22,000 and 115,000 rifles annually, averaging 70,000 a year.