tm9-801.com

I was reading TM-10-35 and on pg 39 'Defense against air attack' I cam across this passage:

"Machine guns, usually available in the ratio of one to every four
vehicles, are spaced throughout the convoy so that attacking
planes are subject to a field of fire the entire length of the
column."

This actually proves my point about the MG mounts on CCKWs. 1. They were not installed at the factory, on the production line, and two, about 20-25% of trucks at the Quartermaster Troop Transport Company level would have had them (these are the QM companies assigned to Regimental/Battallion level unit). T/O&E 10-57 has the exact QM Co loadouts.

a lot of the danish gmc had a VEHICULAR MOUNT - M36 TRUCK RING MOUNT
with a Browning M2 on them you can see a danish GMC here http://www.armyvehicles.dk/gmc353gs.htm

I'm sure that they used whatever they could bolt onto the truck. Only persnickety collectors would care if the mount is the 'proper' one.

My point was more along the lines of 'not every 6x6 had one, and they were added an needed'. The factory would not know the destination of a truck, so they could never fulfill TO&E off the line.

The mounts would be added at the assembly point or when finally assigned to a unit.