My thoughts on the
MiniGun Supergun:
It is a very good supergun and probably all you need.
It's not cheap to make if you don't already have any of the components.
It involves some SMD soldering, most easy but the THS7374 requires some careful drag soldering and a good check over under magnification to check none of the legs are bridged.
The initial jumper settings can be confusing but the info is all there on the mega post on Arcade Projects forum.
You can make a 3D printed case which makes it much more robust.
I used a spare power lead from modular PC power supply as the power lead, a neat solution if you have one.
There are two versions mini din 8 and mini din 9 dont source the wrong socket like I did.🤦♂️