Daryl C's mount was exactly what I was looking for but I wanted to use it on Wall Control so I remixed to fit a 3x6 DDD Wall Control centerpiece. I printed on the back with painted on supports on the tabs and the upper half of the arms. No supports are needed for the lock threads in my experience. Did 4 perimeters and 20% infill in PLA+ and it seems sturdy.
The author remixed this model.
Modified the wrench holder to fit the DDD Wall Control System. Also flipped the orientation so the snout of the gun points to the left.