Stephan98k
aka 8x57IS
As already mentioned, it is an extremely important topic and here is an excerpt from April 15, 1944 from the Speer office:

The Heer and RdL u. ObdL departments responsible for the procurement of fire equipment are authorized to place orders for fire equipment under the preferential Wehrmacht order number SS 4928 and in addition, to mark all orders with the following note:
"According to the order of the RM.f.R.u.K., orders with the preferential Wehrmacht order number SS 4928 are to be processed preferentially within Group I of the priority sequence, but they rank after fighter (plane) production and the supplies to it."

The Heer and RdL u. ObdL departments responsible for the procurement of fire equipment are authorized to place orders for fire equipment under the preferential Wehrmacht order number SS 4928 and in addition, to mark all orders with the following note:
"According to the order of the RM.f.R.u.K., orders with the preferential Wehrmacht order number SS 4928 are to be processed preferentially within Group I of the priority sequence, but they rank after fighter (plane) production and the supplies to it."