To improve your workstations in ARC Raiders, you need rare Sentinel Firing Cores. But finding them is not that easy. We will show you a safe way to find them.
Where can I find Sentinel Firing Cores? To obtain the very rare Sentinel Firing Cores, you must defeat the aforementioned Sentinel ARCs, which only appear in certain areas. Alternatively, you can occasionally find them in the remains of destroyed ARCs, but targeting the Sentinels is a much safer way.
However, they also drop the cores only rarely, so some patience is required, and it’s best to approach the task systematically to increase your chances.
The “Dam Battlegrounds” map is best suited for this, as the number of ARCs is relatively low and you can easily spawn near remains and a particularly attractive spot where 2 Sentinels are located directly. We’ll show you exactly where to look.
The best locations to get Sentinel Firing Cores
The best place to start your search is at the Research & Administration site. There you will find the southernmost spot where Sentinels spawn, and you can work your way north.
This is also the only place where 2 Sentinels appear in close proximity, giving you double the chance to obtain Firing Cores with little effort. One of them can even be taken out from a distance, as he is visibly located on a roof near the stairs.
You can see the locations where you can find Sentinels on the Dam Battlegrounds in green on this map:

What should be noted? It is important to keep in mind, as mentioned at the beginning, that the Firing Cores are not guaranteed loot. You need to be prepared to go through this farm loop more often. However, the spawn spots are close together on this map, so you should be able to reach your goal quickly and as efficiently as possible.
You should also be aware that you are not alone in your endeavor. You will very likely encounter other Raiders during your excursions. So be prepared or form groups so that you don’t lose the hard-earned loot you’ve gathered.
The field depots are also among those points that Raiders will look for in due time. They belong to the quest “Under the Radar,” which can really challenge some players. To prepare and know how to find them quickly, we have a guide for you here: ARC Raiders: Field Depot Locations for the “Under the Radar” quest – How to complete it quickly