ARC Raiders combines both PvE (player versus environment) and PvP (player versus player). Players can drop into raids, scavenging resources and salvaging gear as they face ARCs and players. After successfully extracting, you return underground to your base where you can upgrade the workbenches and craft better equipment and buy arc raiders loot.


 


 Sentinel Firing Cores is a material of advanced level that's required for certain workshops to reach Level 3. Gunsmith, as an example, requires 4 Sentinel firing cores in addition to other components for its final upgrade tier. These cores are required to unlock the top-tier capabilities of weapon crafting.


 


 The game does not clearly indicate where to find Sentinel Firing Cores, or which enemies they drop. We'll cover the most reliable farming techniques and locations in this article to help you get Sentinel Firing Cores.


 


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 Sentinel Firing Cores can only be obtained from Sentinel ARCs. These enemies are known for their long-ranged attacks. The most important detail is identifying which Sentinel ARC variation you are dealing with. Two types are identical in appearance but with different weapons.


 


 One shoots multiple powerful shots, like a sniper, and the other fires a rapid stream of bullets, like a minigun. The sniper variant is the only one that can drop Sentinel Firing Cores.


 


 ARC Husks will also drop Sentinel Firing Cores if certain map conditions are met. The ARCs are scattered on the map. While not all Husks contain loot or other materials, checking them out during raids can provide you with another source.


 


 Sentinel ARC locations


 ARC Raiders spawns Sentinel ARCs at random on different maps. They are not fixed and their exact locati0n will change from raid to raid. The spawns are always in the same map zone where you can search for them.


 


 There are three main maps on which Sentinel-ARCs can be found:


 


 Dam Battlegrounds


 


 Buried City


 


 Spaceport


 


 Sentinels can be found in specific zones of each map. Random spawning means that you will not find them in exactly the same spot each raid. Instead, they tend to stick to certain areas on each map.


 


 1. Dam Battlegrounds


 


 Sentinel ARCS can spawn at three different locations on every raid in Dam Battlegrounds. They rotate randomly so you may not find them at all three locations in a single raid. The locations are:


 


 Near the entrance of Research & Administration building


 


 North of Floodgates


 


 North of Breach


 


 If you are farming Sentinel Firing Cores then it is important to check each locati0n. You should start at the entrance to the Research & Administration Building, since this is usually a central spot on the map. After that, you can move north towards the Breach and Floodgates area. Patrolling between these zones increases your chance of finding a Sentinel.


 


 2. Buried City


 


 Sentinels ARCs appear in two locations on Buried City's map. Here are the two locations:


 


 Inside the Town Hall


 


 West of Piazza Arbusto and under the bridge


 


 Check both locations during your raids. Buried City has a more compact layout, making it easier to switch between the two locations than the Dam Battlegrounds' spread out spawns.


 


 3. Spaceport


 


 Sentinels ARCs are the most common spawned enemies on Spaceport, compared to any other map. Six zones can host this enemy during any given raid.


 


 Inside Rocket Assembly


 


 North and South Trench Towers


 


 East side Control Tower A6


 


 Inside Container Storage


 


 Southeast of Fuel Lines


 


 South of Departure Building


 


 Spaceport’s larger map allows these spawns to be spread over significant distances. The time limit makes it impossible to raid all six locations. Concentrate on clusters close to each other.


 


 Final Words


 Sentinel Firing Cores are dropped by the sniper-version of Sentinel ARCS found across Dam Battlegrounds Buried City and Spaceport. Check multiple locations for each raid. The spawns will rotate randomly. For efficient farming, prioritize maps that have more spawns like Spaceport and the sniper Sentinels over the minigun Sentinels. ARC Husks on certain maps can provide more chances to drop.