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Destroy a Sentinel, then scavenge its wreck for a chance to find a Sentinel Firing Core. ARC Couriers are a secondary possible source. Neither route is guaranteed, and no dependable current drop rate is established.
Where to find Sentinels
Sentinels occupy elevated positions across several maps. These are reported spawn locations, not guaranteed appearances in every round.
- Dam Battlegrounds: Check north and south of the Breach and the south corner of Research & Administration. PC Gamer’s 10 November 2025 guide also points to the blue exterior staircase at Research & Development and both ends of the destroyed dam between Control Tower and Power Generation Complex; treat these as route suggestions, not guaranteed spawns.
- Buried City: Check the Town Hall bell tower and beneath the overpass south of Town Hall.
- Spaceport: Search the east corner of South Trench Tower.
- Blue Gate: Look along the concrete beams spanning Outer Gates and at the communication tower at Pilgrim’s Peak.
- Stella Montis: Check the center of the Atrium ceiling.
The ARC Raiders Wiki’s Sentinel page reports that Sentinels are more common during Hurricane conditions, but gives no figure for how much the odds change.
How to destroy a Sentinel and collect its core
- Approach with solid cover nearby. A Sentinel tracks targets with a laser before firing a damaging Heavy Ammo round. Break line of sight rather than staying exposed.
- Aim for the yellow canister. The wiki identifies the canister on the Sentinel’s swiveling arm as its weak point.
- Move after taking cover. A Sentinel may fire at your last known position after losing sight of you, so do not immediately peek from the same spot.
- Scavenge the destroyed Sentinel. Search the chassis for the core. If the wreck drops from its elevated position, check the ground beneath it as well.
Sentinel Firing Cores are rare, so plan to search multiple spawn areas rather than relying on one location. The PC Gamer guide also recommends looting ARC Couriers as an additional chance to find Sentinel parts; it does not establish a guaranteed Courier drop.
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#1 Best Overall
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8Bitdo Ultimate 2C Wireless Controller for Windows PC and Android, with 1000 Hz Polling Rate, Hall Effect Joysticks and Triggers, and Remappable L4/R4 Bumpers (Green)
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What to do with Sentinel Firing Cores
Gunsmith level 2 to level 3 requires four Sentinel Firing Cores, three Rusted Gear, and five Advanced Mechanical Components. If that upgrade is your goal, keep four cores before recycling any surplus. Recycling one core returns two ARC Alloy and two Mechanical Components. These quantities are also listed by ARC Raiders Hub’s workshop upgrade costs page.
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