MT Only: Why gun combat 0?

[Jame]

I actually like this rule. I'd give it to any character in any Traveller variant which doesn't have a combat skill.

However, I would give Brawling-0 Handgun-0, Dagger-0 and maybe SMG-0 or Carbine-0 to such a civilian character so they're not taking an untrained penalty.
Same with Vacsuit-0