5-8% toughness on Chained Hit.
Hitting at least 3 enemies with an attack, increases your cleave by 140-200% for 2 seconds.
5-8% Strength for every 10% of magazine spent during continuous fire. Stacks 5 times.
3.5-5% Critical Chance for every 10% of magazine spent during continuous fire. Stacks 5 times.