+5-8 Bleed Stacks on Critical Hit.
+12.5-20% Critical Chance for 6s on successful Dodge.
Critical hit chance scales by your current heat level up to 27.5-50%. Also increases critical ranged attacks damage by 4-10%.
+5-8% Strength for every shot fired during continuous fire. Stacks 5 times.
Kills Elites while buffing teammates.
Field Improv improves all kits dropped by any teammate, not just the Veteran. Grimoires will suck Field Improv kits dry for no benefit though.