This mod is now available as a Nightmare Mode reward at the end of the mission.
One will receive this mod with the Trinity Mod Pack when buying the 4,300 Platinum package (PC Only)
Notes
Equipping this mod and Barrel Diffusion simultaneously will provide 180% multishot, giving the sidearm a 100% chance to fire 1 additional round (2 rounds/shot) and an 80% chance to fire 2 additional rounds (3 rounds/shot).
Likewise, equipping this mod and Gunslinger together will result in a 132% increase in firing speed.