Tiaral

Yes, I'm making a ranged unit. I just haven't decided which weapon to base it on. I have the names, but I don't understand the functional differences between them.

They may have different modifiers and features, but the main differences are as follows:
Sniper Arquebus
Longer reload time, greater range.
Heavy Arquebus
Shorter range, higher damage.
Hand Cannon
Ability to move and shoot simultaneously, shorter range.
Portable Cannon
Longer reload time, movement speed restriction, area-of-effect damage (3x3).
Tanegashima
Improved arquebus.