Make a perk that changes the guns damage

[Windwhistle]

How could I get the perk to be taken, and then once it is taken, increase a certain guns damage?

 

Thank you in advance.

[panzersharkcat]

Create a perk and have its effect be whatever amount of increased damage you want it to be. Then in its conditions, make it so it's applied only if the weapon you want is equipped.

[DaWrecka]

To add a bit more information; you want to use the Calculate Weapon Damage entry point, and use the IsWeaponInList function for the Perk Owner condition; make a Form List which has the weapon or weapons you want to boost, and use that Form List in the perk's condition.