The Sentinel Firing Core is a rare, recyclable item tied to one of ARC Raiders’ most punishing defenses: stationary Sentinel turrets. If you’re pushing crafting progress or just optimizing your loadout budget, it pays to know where this core drops, the safest way to trigger those drops, and whether you should sell, recycle, or salvage it once it’s in your pack.

Sentinel Firing Core item profile

Attribute Detail
Item Sentinel Firing Core
Rarity Rare
Type Recyclable (can be broken down into crafting materials)
Weight 1 KG
Stack size 3
Sell price 3,000 Raider Coins

By default, the core sells well for its weight and stack size, but it’s also a clean way to convert turret kills into crafting inputs if you need ARC basics quickly.

Where Sentinel Firing Cores drop

These cores drop from Sentinels — large, stationary turrets that guard key outdoor areas. You’ll typically see them mounted on rooftops or ledges with a clear lane of fire. Sentinels track movement and fire a single heavy round whenever they maintain line of sight.

Property Detail
Enemy Sentinel (stationary ARC turret)
Typical placement Outdoors, elevated positions (building tops, ledges)
Attack pattern Traces movement; fires a single heavy round while in line of sight
Pre‑fire signal Multiple lasers briefly converge on the target before it shoots
Weakpoint Small yellow capsule on the swiveling arm
Recommended ammo Medium or heavy rounds
Loot highlights Sentinel Firing Core, Heavy Ammo, various ARC materials
XP Destroy: 200 XP; Loot: 300 XP

Tip: Use terrain to break line of sight. Peek only to tag the weakpoint or reposition, then duck back behind cover before the lasers converge.

Fight the turret safely to farm cores

  • Establish cover first. Sentinels punish open angles; plan a route with hard cover that interrupts its sight lines.
  • Watch the lasers. When you see multiple beams merge on you, the shot is imminent — change position or get behind cover.
  • Aim for the yellow capsule. Consistently hitting the weakpoint ends the fight faster and reduces the number of exposure windows you need.
  • Bring the right ammo tier. Medium or heavy rounds are the most efficient against this target.

Note: Sentinels are stationary but not forgiving; treat every peek like it costs a shield plate. A few clean weakpoint shots are safer than sustained body fire.

Recycle vs. salvage vs. sell

Once you’ve got a Sentinel Firing Core, you have three clear options. Here’s what each yields and how the coin math works out.

Action Output Approx. coin value What this is good for
Sell 3,000 Raider Coins 3,000 Maximizing coins when you don’t need base materials
Recycle 2 × ARC Alloy + 3 × Mechanical Components ≈ 2,320 (200 × 2 + 640 × 3) Direct conversion into common materials for recipes
Salvage 2 × Mechanical Components ≈ 1,280 (640 × 2) Quick Mechanical Components when ARC Alloy isn’t needed

If you’re chasing raw currency, selling the core beats recycling by roughly 680 coins per item. Recycle when you specifically need the Alloy and Components without another trip to loot. Salvage is the narrow option for players who only need Mechanical Components and want to keep the process simple.

Quick takeaways for efficient runs

  • Target Sentinels on rooftops and ledges to farm cores, but only fight them with reliable cover.
  • Use the laser convergence as your cue to duck out or re‑peek from a new angle.
  • Prioritize the weakpoint and bring medium or heavy rounds to reduce time exposed.
  • Sell the core for coin efficiency; recycle when your workshop needs Alloy and Components; salvage for a fast Component top‑up.

The Sentinel Firing Core sits at a useful intersection of money and materials. If coins are your bottleneck, sell it. If crafting is, break it down. The turret that drops it is predictable — learn its tell, play the angles, and you’ll turn dangerous rooflines into steady progress.