438a3a28_es___Dungeons_and_Dragons_Wiki__Perk_Benefit
[Perk Name] Stopping Power [Pro Perk Benefit] Against vehicles and inanimate objects, your bullets deal an extra 2 points of damage per damage die. [Perk Benefit] 
When using a firearm, you deal an extra point of damage per damage die.
CoDnD- Call of Duty 3.5 (3.5e Sourcebook)/Chapter 2: New Rules - Dungeons and Dragons Wiki
Perk Benefit