Barrel Diffusion

Barrel Diffusion is a mod that increases the chance of firing one additional round per shot fired by 20% per rank. The additional shot does not consume additional ammunition.

At 120% it has a 100% chance to fire one additional round (2 rounds/shot) and a 20% chance to fire two additional rounds (3 rounds/shot).

Acquisition
Barrel Diffusion can be acquired from Tier 3 Infested Defense missions (Xini, Gnathos, Viver and Ixodes) on Eris.