
Arpeggio I is an uncommon Tier I assault rifle in ARC Raiders. Somewhat effective against ARC armor plating.

Has decent damage output and accuracy.
Compare the material costs, upgrade bonuses, repair requirements, and recorded quest rewards for every Arpeggio tier.
| Tier | Upgrade cost | Upgrade bonuses | Repair cost | Quest source |
|---|---|---|---|---|
| Arpeggio I Durability 100/100 | Base tier | — | 2× Mechanical Components + 2× Simple Gun Parts Restores 50% durability | Broken Monument (1×)Completion reward |
| Arpeggio II Durability 110/110 | 4× Mechanical Components + 1× Simple Gun Parts | Increased Fire Rate: 20%; Reduced Reload Time: 12.5% | 3× Mechanical Components + 3× Simple Gun Parts Restores 50% durability | — |
| Arpeggio III Durability 120/120 | 5× Mechanical Components + 1× Medium Gun Parts | Increased Fire Rate: 40%; Reduced Reload Time: 25% | 4× Mechanical Components + 4× Simple Gun Parts Restores 50% durability | — |
| Arpeggio IV Durability 130/130 | 5× Mechanical Components + 1× Medium Gun Parts | Increased Fire Rate: 60%; Reduced Reload Time: 50% | 5× Mechanical Components + 5× Simple Gun Parts Restores 50% durability | — |
Craft Arpeggio I at a level 2 Gunsmith with 6 Mechanical Components and 6 Simple Gun Parts. Complete Broken Monument to earn 1× Arpeggio I as a quest reward.