[Snake]

Though the skill is not tied to the weapon type in that sense, anyway. It can only be used with 'Handguns', 'Rifles' and 'Shotguns', the same way Kagekiri gets -1M if used with a Katana.

If any of those aren't matching types? Bzzt. Skill fails, although it shouldn't just lol-fail, it should be unusable to avoid confusion. And if this goes through, it would be the same as asking Lead Storm to casually work with launchers.

So still 'nah' in my part, unless said mutated gun weapon has a range beyond 4. (So it would make this something for bows or throwing daggers.)