Full Metal Jacket (Relic) - Crab Champions Wiki - Leunsel

Drops

Rarity: Epic
Loot Pool: Skill
Found In: Skill chest
Spawn Weight: 0.3
Unlock: From the start

Chance to Be Offered

Spiked Chest: 1.25%
Epic Chest: 1.25%
Relic Chest: 0.39%
Skill Chest: 0.3%
Random Chest: 0.05%

That it is among the items the chest shows, at the start of a run with everything unlocked.

Open it in the save editor

Effect at Level 1

All damage penetrates enemy armor

Read from the game files of Steam build 20903826, updated 2026-10-24. The same data powers the save editor.