Look for the atrium in the center with the fountain. There’s a villa in the southwest corner of Reckless Railways. Reckless Railways (Valeria) Weapon Mod Bench location Image: Epic Games via Polygon You’ll find the vault door at the end of the tunnel. On the north side of that, there are some stairs with a tunnel underneath. Head to the north side of Lavish Lair and look for the greenhouse (arboretum?) attached to the back of the mansion. Lavish Lair (Oscar) Weapon Mod Bench location Image: Epic Games via Polygon The door will only open if you’re carrying that location’s boss’ Society Medallion. When you approach the vault door, you’ll be scanned. They’re usually in the basement of one of the large houses. The Society vaults you’re looking for are hidden much better than the Underground’s where you can find Weapon Cases.

There are five Weapon Mod Benches in Fortnite Underground. But these vaults are run by The Society - and that means you’ll need to be carrying a Society Medallion to get inside. Like Weapon Cases, Weapon Mod Benches are located in vaults. Where to find Weapon Mod Benches in Fortnite Image: Epic Games via Polygon Here’s where to find their various locations. You’ll find Weapon Mod Benches the same places you’ll find the five Society NPC bosses - which is convenient since this is where you’ll also find Medallions. To mod weapons in Fortnite Chapter 5 Season 1, you first need to acquire a Society Medallion, then locate a Weapon Mod Bench.