Some upgrade materials in ARC Raiders can be surprisingly difficult to track down, especially if you’re not sure where they come from. The Sentinel Firing Core is one such item—many players assume it’s extremely rare, but in reality, it’s much easier to acquire once you know where to look.

Where Sentinel Firing Cores Come From

The primary way to obtain Sentinel Firing Cores is by destroying Sentinel turrets. After you eliminate a turret, it drops a section of its hull. Interacting with that debris allows you to loot the Firing Core, making them far more common than players initially realize.

Best Locations to Find Sentinel Turrets

Sentinel turrets appear in multiple maps, but some areas have significantly higher spawn rates:

Dam Battlegrounds – Control Tower

Includes turrets behind the locked interior door

Spaceport – Control Tower

Buried City – Bell Towers

Any of these locations will reliably provide turret encounters. If you’re specifically farming Cores, rotate between these points of interest for the most consistent results.

Additional Loot Sources

While turrets are the main source, you can also occasionally find Sentinel Firing Cores on:

ARC Probes

ARC Couriers

These drops are less frequent, but always worth checking whenever you happen to defeat or find one.

Why These Cores Matter

Sentinel Firing Cores are part of a larger set of mechanical materials used for upgrading stations and crafting. As ARC Raiders continues to expand with new updates, these components will remain relevant—especially since Expeditions reset your progress and force you to gather everything again.

If you want more help progressing, consider looking into guides for Scrappy upgrades, fruit farming, solo queue match details, or Metacritic score breakdowns.

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