It really depends on what is considered a base weapon in this game. If for instance, the Laser Rifle is a base weapon and the Laser Sniper Rifle and Scattered Laser Rifle are modded variants of the base Laser Rifle, that means there is possibly a vast amount of weapons that can be obtained in the game.
I think the key to determining what is a base or modded weapon is to look at the wording of each weapon. If the name does not have some sort of adjective, then it is a base weapon (ex: Laser Rifle). Weapon titles with words such as Scattered, Focused, and Sniper would probably indicate that the weapon is a modded variant of a base weapon.
If I am predicting this correctly, the Laser Pistol and Laser Rifle are both individual base weapons which would indicate that a base weapon can be transformed into another base weapon. This would also mean that the Scattered Laser Rifle, Laser Sniper Rifle, and Focused Laser Rifle are all modded variants of the base Laser Rifle. If this is the case and if each modded variant of each base weapon has a distinct function and feel, then the total number of available weapons should provide much variety for players.
Here is a more defined example of what I am talking about:
Base Weapon: Laser Pistol
Modded Weapon Variants: Long Laser Pistol, Short Laser Pistol, Focused Laser Pistol
Base Weapon: Laser Rifle
Modded Weapon Variants: Laser Sniper Rifle, Scattered Laser Rifle, Automatic Laser Rifle, Focused Laser Rifle