ARC Raiders Sentinel Firing Core Guide: The Fastest Ways to Find Them

Summary

Sentinel Firing Cores are one of the more frustrating materials to find in ARC Raiders, especially if you're trying to upgrade your Gunsmith to the final level. You need four cores, but Sentinels have rare and inconsistent spawn locations. Fortunately, there are several ways to get them, and one method is much more reliable than hunting ARC Raiders Items directly.

1. Where to Find Sentinel Firing Cores

The most reliable Sentinel spawn reported so far is on Dam Battlegrounds, near the Research and Administration Building. Head to the staircase on the south side and check the corner around the building. A Sentinel can spawn there and usually has a clear position overlooking the area.

Take it down from cover, then immediately loot the wreckage for a chance to obtain a Sentinel Firing Core.

However, don't rely entirely on this location. Sentinels do not appear every round, and their spawns can vary. Two additional reported locations are near opposite sides of the bridge on Dam Battlegrounds, although these appear to be significantly less consistent.

2. The Best Method: Loot ARC Carriers

If you want Sentinel Firing Cores without repeatedly waiting for a rare Sentinel spawn, ARC Carriers are your best option.

These are crashed ARC vessels that can be breached and are usually recognizable by the smoke coming from the wreckage. They are different from the smaller ARC Probe-type objects.

ARC Carriers can contain Sentinel Firing Cores, making them a much more efficient target when you're exploring different maps. Whenever you encounter one, it's worth checking the loot rather than ignoring it.

For players who only need a few more cores for their Gunsmith upgrade, this approach can save a huge amount of time.

3. Other Reported Sentinel Locations

Sentinels have also been reported in several other areas:

• Buried City: Check the rooftop of the Town Hall in the center of the map, particularly around the structure where a bell would normally be.

• Spaceport: Several Sentinel spawn locations have been reported, but these are less consistently confirmed.

• Blue Gate: Reports suggest possible spawns near the large central checkpoint and around the large antenna in the top-right area.

These locations should be treated as potential spawns rather than guaranteed farming spots.

4. How to Farm Sentinel Firing Cores Faster

The most efficient strategy is simple: loot every ARC Carrier you encounter, then check Dam Battlegrounds for the Sentinel near the Research and Administration Building when you're still short.

There is also a known issue where a Sentinel can fall into certain areas after being destroyed and become impossible to loot. Because of this, always check the wreckage carefully before leaving.

Final Thoughts

Getting four Sentinel Firing Cores can take some patience, but you don't need to spend every raid hunting rare Sentinels. Prioritize ARC Carriers, use Dam Battlegrounds as your main Sentinel hunting route, and treat other reported locations as bonus opportunities. If you're still short on resources, cheap ARC Raiders Items can also help you progress more efficiently.