Damage can be increased from various bonuses. However, it is not recommended to waste high-tier mods on this weapon, due to low damage output. Especially not recommended to use rare and expensive damage type conversion mods.
Applying all bonuses (+8Damage+143%Melee damage) leads to the following result:
65 - 75 damage in weapon stats. The damage dealt to targets will depend on the armor they are wearing and the armor penetration rate on your character.