Weapon Penetration

Weapon Penetration refers to how much Damage Reduction (DR) is ignored when calculation the damage a character receives when a damage is rolled. If a weapon deals 10 damage with a weapon penetration of one to a character with damage reduction 3, the weapon penetration modifies the damage reduction to become 2 instead of 3. The character would take 8 point of damage instead of 7.

Weapon Penetration

Mass Effect: RPG Monkeyman2525