While every weapon in Starfield is perfectly serviceable out of the box, installing mods can make them significantly more effective in almost every situation. However, modding does come at a cost, and the best add-ons aren't accessible until players decide to invest a lot of time and effort into them.
Starfield: How to Modify Weapons
Modding weapons in Starfield can spell the difference between an effective gunfighter and one that's constantly reloading a previous save file.