7.5-15% Weak Spot Damage. Weakspot Kills also ignore Enemy Hit Mass.
10-25% Rending vs Staggered Enemies.
5-8% Strength for every 10% of magazine spent during continuous fire. Stacks 5 times.
Hitting an enemy with the special attack gives them 10-16 stacks of 2.5% Brittleness. Debuff lasts for 5 seconds and can have a maximum of 16 stacks.