Poe would likely be upgrading his own weapons and those of the other explosives/energy weapons users - all two of them. :P

Interesting fact: The individual batteries in a standard power cell is approximately the size of some bullet calibers. It wouldn't be too hard to repurpose spent ammunition casing, packing energy cell batteries into them along with a hardened casing, which would rupture and release their energy content upon impact. This could provide everybody using boring ballistic weapons with a bit of a small energy-explosive kick with each shot (although a number of bullet calibers are too small to repurpose in this fashion, including 5mm, 5.56mm, 9mm, any kind of shot other than a slug, etcetera).

I'll get to work setting up a Workshop profile for weapon upgrades and custom item creation via Poe's workstation.