I honestly only use the NEPS driver to get the screws started, and do all of my tightening with a 1.8mm flat-head. The NEPS driver just feels flimsy, and I feel like I would just bend that metal if I used it to actually tighten a screw.

I've seen several other armorers that have taken a 2mm or so Wiha and dremeled off the sides to create a custom driver that would hold up to heavy use. I haven't done that one yet, but I'm always tempted.

I would love to try the pro version of the driver first-hand. Assuming the tip can be magnetized that would be pretty nice. Honestly though the best thing you could put out would be a 4mm bit that I could use with the screwdriver I already have in my pocket while I'm working in the armory or supporting my club fencers in a tournament.

Best of luck!