Borderlands 4Undershield

Armor Augment Effect improves from Secondary → Primary → Matching Augments (x|y|z).
Each Augment can also modify Armor Capacity. Matching Augments apply the Capacity twice.
All Augments are equally common giving each a 3.45% Chance (1/29) to appear.
Matching Augments: 0.123% (1/812)

• Health Booster ^{-8.8% Capacity} +20|30|40% Health Booster Drop Chance when damaged: Restoring 15|25|35% Health
• Magazine Booster ^{-10% Capacity} +10|15|20% Magazine Booster Drop Chance on Kill: Refilling held Gun
• Overshield Booster ^{+7.5% Capacity} +10|15|20% Overshield Booster Drop Chance on Kill: 20|30|40% Overshield
• Positive Reinforcement ^{+7.5% Capacity} +15|25|40% Armor Shard Drop Chance on Kill
• Power Booster ^{+5% Capacity} +20|30|40% Power Booster Drop Chance when damaged: +10|20|30% Gun Damage for 5s

• Flanking ^{+7.5% Capacity} Up to +10|18|25% Move Speed, scaling with broken Segments
• Heavy Plating ^{+10% Capacity} Up to +20|35|50% Damage Reduction, scaling with broken Segments
• Spunky ^{+7.5% Capacity} Up to +10|20|30% Damage Dealt, scaling with broken Segments

• Boxer ^{+10% Capacity} On Melee Hit: -1 Armor Segment for +20|30|50% Damage Dealt
• Evasive ^{+5% Capacity} Damaging enemies has 5|8|10% Chance: +10|15|25% Move Speed for 5s
• Sturdy ^{+7.5% Capacity} Damaging enemies has 5|8|10% Chance: +20|28|35% Damage Reduction for 5s

• Armor Segment ^{+10% Capacity
  Only Secondary} +1 Armor Segment
• Capacity +25|50|75% Max-Capacity
• Healthy +10|25|50% Max-Health
• Turtle +40|65|100% Shield Capacity
  -10|15|20% Max-Health

• Knockback ^{+5% Capacity} On Segment break: Knocks back enemies and +30|40|50% Move Speed for 5s
• Mini Nova ^{+5% Capacity} On Segment break: Trigger Nova, dealing 4,401|6,601|8,802 Damage
• Missile Swarm ^{-12.5% Capacity} On Segment break: Launch 2|3|5 Missiles, each dealing 1,760|3,521|5,281 Damage

• Bladed ^{-5.5% Capacity} On Segment filled: +13|20|30% Gun Damage for 5s
• Reinforced On Segment filled: 1,232|1,760|3,521 Overshield
• Scavenger On Segment filled: Refill 10|20|30% current Gun’s Mag

• Absorb ^{-5% Capacity} +15|30|40% Bullet Absorb Chance, refilling current Gun’s Mag
• Adaptive ^{-5.5% Capacity} +8|16|24% Max-Health
  While active: +20|40|50% Resistance to last Damage Type for 3|4|5s
• Armor Strength ^{+7.5% Capacity} While active: +10|20|30% Damage Reduction
• Reflect ^{+15% Capacity} While active: +15|30|40% Projectile Reflect Chance
• Resistance ^{+7.5% Capacity} While active: +17|22|26% Elemental Resistance
• Spike ^{+20% Capacity} While active: Taking Melee Damage reflects back 7,041|10,562|14,083 Damage

• Pinpoint ^{+7.5% Capacity} While empty: +20|28|35% Accuracy, +20|28|35% Gun Handling, +25|35|50% Projectile Speed
• Utility ^{+7.5% Capacity} While empty: +20|28|35% Gun Handling, +10|15|20% Move Speed