5-8% toughness on Chained Hit.
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.
2-5 bullets loaded from Reserve on Critical Hit.
7-10% Strength for every 4 Single Target Hits. Lasts 2s and Stacks 5 times.
With an Elite Kill, gain 15% Rending for 10 seconds. This combines well with Point-Blank Barrage, granting 45% Rending total. Use Point-Blank Barrage when Crushers appear or when you need toughness. Criticals should provide you with good damage and enough ammo for intense, drawn out engagements with no time to reload.