Armor Divisors and Penetration Modifiers

An “armor divisor” indicates that
an attack is especially good (or bad)
at penetrating Damage Resistance.
Armor divisors appear on weapon
tables as numbers in parentheses
after damage dice; e.g., “3d(2) pi”
means 3d piercing damage with a (2)
armor divisor.
A divisor of (2) or more means that
DR protects at reduced value against
the attack. Divide the target’s DR by
the number in parentheses before sub-
tracting it from basic damage; e.g., (2)
means DR protects at half value.
Round DR down. Minimum DR is 0.
Some divisors are fractions, such
as (0.5), (0.2), or (0.1). DR is increased
against such attacks: multiply DR by 2
for (0.5), by 5 for (0.2), and by 10 for
(0.1). In addition, treat DR 0 (e.g., bare
skin) as if it were DR 1 against any
fractional armor divisor!