Up to +5-20% Strength based on the charge time of your heavy attacks. Stacks 3 times.
+7.5-15% Weak Spot Damage. Weakspot Kills also ignore Enemy Hit Mass.
+10% Critical Chance for every 0.2-0.35 second while aiming. Stacks 10 times. Discharges all stacks upon firing.
+18-30% Strength for 5s when every pellet in a shot hits the same enemy.