
Hairpin III is a common Tier III pistol in ARC Raiders. Weak against ARC armor plating.

Has a built-in silencer. Great for stealth, but tricky in combat.
Compare the material costs, upgrade bonuses, repair requirements, and recorded quest rewards for every Hairpin tier.
| Tier | Upgrade cost | Upgrade bonuses | Repair cost | Quest source |
|---|---|---|---|---|
| Hairpin I Durability 100/100 | Base tier | Special Trait: Integrated Silencer | 2× Metal Parts + 1× Rubber Parts Restores 50% durability | — |
| Hairpin II Durability 110/110 | 8× Metal Parts | Increased Fire Rate: 10%; Reduced Reload Time: 13%; Special Trait: Integrated Silencer | 4× Metal Parts + 3× Rubber Parts Restores 50% durability | — |
| Hairpin III Durability 120/120 | 9× Metal Parts + 1× Simple Gun Parts | Increased Fire Rate: 20%; Reduced Reload Time: 26%; Special Trait: Integrated Silencer | 6× Metal Parts + 1× Simple Gun Parts Restores 50% durability | — |
| Hairpin IV Durability 130/130 | 1× Mechanical Components + 1× Simple Gun Parts | Increased Fire Rate: 30%; Reduced Reload Time: 40%; Special Trait: Integrated Silencer | 1× Mechanical Components + 2× Simple Gun Parts Restores 50% durability | — |
Upgrade Hairpin II to Hairpin III at the Gunsmith with 9 Metal Parts and 1 Simple Gun Part.
