+7.5-15% Weak Spot Damage. Weakspot Kills also ignore Enemy Hit Mass.
Up to +5-20% Strength based on the charge time of your heavy attacks. Stacks 3 times.
+5-8% Strength for every 10% of magazine spent during continuous fire. Stacks 5 times.
+1-4% Toughness for every 10% of magazine spent during continuous fire. Stacks 5 times.