I've recently bought a 1903 stock from Sarco. The stock is ok and in good shape for what they called service grade. I have not found any type of arsenal stamps on the stock except a Ordnance dept flaming bomb on the end of the stock by the front band, the number 17 on the right side of the stock and a 4 digit number on the right side of the butt stock. Could I have purchased a depot replacement stock?