Take the 2-minute tour ×  The Assault Rifle Piercing Mod I has
the following description which I find somewhat confusing:
enter image description here   So, does this reduce my damage to
60% in exchange for armor-piercing, or does 25% of my damage go
straight to health, but of that only 60%? How does this work
with enemies that have just an armor bar and no health bar like
Brutes?  share|improve this question No enemies in ME3 have
health bars under armor bars; the 25% appears to ignore the
extra damage reduction Armor "health bars" have. –  Prinny
Brocka Apr 8 '12 at 14:57 add comment  1 Answer  up vote 11 down
vote accepted  Any projectiles which benefit from the piercing
(in this case, penetrate a .5 meter thick object) will deal
reduced damage (60%). Projectiles which don't need to penetrate
cover or an obstacle to hit their target do normal damage. This
includes the visual armor that Husks / Cannibals can get, and
the shields of Cerberus Guardians.  Additionally, depending on
the type of enemy and the d