7.5-15% Weak Spot Damage. Weakspot Kills also ignore Enemy Hit Mass.
Hitting an enemy gives them 1-4 stacks of 2.5% Brittleness. Debuff lasts for 5 seconds and can have a maximum of 16 stacks.
Immune to Ranged Attacks for 0.7-1s on Close Range Kill.
Killing an enemy by firing both barrels makes your next Reload 40-70% faster.