Armor Penetration

Does the Armor penetration % stack for bow mod, horn bow types?

e.g.
bow mod (20%)+horn bow (10%) = 30%

Yep...

Remember that they upgrade is a % chance, like 20% chance of 20% armor penetration, or worse. So perhaps 1 in 5 shots gets that 20%.

My answer is here:

http://www.guildwarsguru.com/forum/s...14#post1487314

Oh, and Sundering is (still) crap.

ok thanx

EDIT: sorry, the search was down or sumthing. Well it wasnt working for me so i posted this. thanx again