5-8% Strength for 4.5s on Kill. Stacks 5 times.
Up to 5-20% Strength based on the charge time of your heavy attacks. Stacks 3 times.
18-30% Toughness on Elite Kill.
You can Hipfire with this weapon while Sprinting. 6-15% Close Damage while Sprinting. Also reduces weapon spread at all times by 30%.