4 months ago - Shurenai - Direct link
Regardless of what mods are equipped to a weapon, it's only affected by it's own weapon bonuses.

A pistol won't be given Rifle boosts just because it has a scope on; Nor will it be given Automatic Weapons boosts just because it has a burst fire or full auto mod on it. It'll only ever be affected by Pistol bonuses.

Same for all other weapons. Rifles only by rifle bonuses, shotguns only by shotgun bonuses, etc.