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Use the Stella Montis Assembly Admin Key on the locked door in the Central Corridor beside Assembly. Follow the Assembly Line east toward the dip to the tunnels, enter the south-side doorway into the corridor, then look right for the door marked by a green line on the floor.
How to find the Assembly Admin door
- Start at Assembly. Head east along the Assembly Line.
- Watch for the tunnel dip. As the ground dips toward the tunnels, look for the doorway on the south side.
- Enter the Central Corridor. Once inside, turn right. The locked Assembly Admin door is marked by a green line on the floor.
- Use the key at the door. This route is reported by Shacknews and an ARC Raiders AI guide.
Assembly is a broad area, so use the tunnel dip, south-side entrance and green floor marking as your landmarks. The available guides do not establish a specific spawn point or coordinate grid.
What to expect inside
A current guide describes the key as uncommon and single-use, and the room as a quick, modest loot sweep rather than a guaranteed jackpot. Loot can vary; these guide-reported expectations do not guarantee particular items or fixed rewards. ARC Raiders AI guide
Guides also differ on whether the room has an upper level: some descriptions show two levels, while others call it a compact office. Sweep the whole unlocked space and check any stairs you find. ARC Raiders AI guide
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#1 Best Overall
orbitkey Active Key Organizer Lite - Graphite
- Compact Key Organizer for Everyday Carry – Keep up to 7 keys neatly stacked in one slim profile with this durable key organizer. No more jingling, scratching, or bulky keychains—just a streamlined solution that fits comfortably in your pocket or bag. Perfect for daily use, commuting, or travel when you need quick access without the clutter.
- Durable & Water-Resistant Build – Made with a highly resistant polymer TPU elastomer, this organizer withstands sweat, water, and rough handling. Designed for active lifestyles, it won’t wear out easily, making it ideal for outdoor use, workouts, hikes, and day-to-day adventures where traditional leather or metal organizers fall short.
- Secure Locking Mechanism – Features a stainless steel locking system that keeps your keys safely in place. The firm but adjustable screw post holds keys tightly so they won’t come loose, while still allowing you to add, remove, or swap keys quickly when needed.
- Pocket-Friendly Design – Built slim to reduce pocket bulk, this organizer keeps your keys stacked flat so they won’t dig into your leg or scratch your phone. A practical upgrade from noisy key rings, making it easier to carry keys in jeans, work pants, gym shorts, or small bags.
- Integrated Carabiner & Accessories Ready – Comes with a stainless steel D-ring for attaching car keys, fobs, or larger accessories. Compatible with add-ons like multi-tools, USB drives, and trackers, so you can customize your carry setup to match your daily routine.
Should you detour for the key?
Treat the room as an opportunistic stop while already routing through Assembly, not as a guaranteed high-value destination. The available guide descriptions characterize its loot as modest and variable. ARC Raiders AI guide
Where keys may appear
One guide reports that keys can drop randomly from containers and names several possible container areas, but it does not give drop rates or establish a guaranteed spawn. ARC Raiders AI guide No exact odds or dependable container location are established by the available reports.
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