A key’s full name tells you which lock to look for. Check the item card and the interaction prompt together: similarly shaped green weapons cabinets can require different keys.
The Gun Store Weapons Locker Key names western Cheongun Village and northern Songdo Wharf. The Black Market Weapons Locker Key is a separate reward in the Level 46 Recon Equipment Kit, while the Level 19 Recon Equipment Kit gives a Police Station Key. A repeated kit name does not make its rewards interchangeable.
Equip the key from Stash/Loadout before deploying. A key left at the FOB cannot open a cabinet in Hajin. Use the individual key pages for the recorded target and acquisition details.
