| Rusted Bolts | Some rusted old bolts | Uncommon | 640 | 0.8 kg | Recyclable |
| Rusted Gear | Can be recycled into crafting materials. | Rare | 2000 | 3 kg | Recyclable |
| Rusted Shut Medical Kit | Can be recycled into crafting material. | Rare | 2000 | 3 kg | Recyclable |
| Rusted Tools | Can be recycled into metal parts. | Rare | 1000 | 2 kg | Recyclable |
| Rusty ARC Steel | Obtained from ARC enemies and activities. Can be recycled into scrap metal. | Uncommon | 640 | 1 kg | Recyclable |
| Sample Cleaner | Can be recycled into crafting materials. | Rare | 3000 | 1.5 kg | Recyclable |
| Seeker Grenade | A homing grenade that targets a single nearby ARC dealing explosive damage on impact | Uncommon | 640 | 0.2 kg | Quick Use |
| Seeker Grenade Blueprint | Lets you craft a Seeker Grenade | Legendary | 5000 | - | Blueprint |
| Sensors | Used to craft utility items and explosives. Can be recycled into scrap metal. | Rare | 500 | 0.3 kg | Topside Material |
| Sentinel Firing Core | Can be recycled into crafting materials. | Rare | 2000 | 1 kg | Recyclable |
| Shaker | A rhythmic instrument used to attract ARC's attention and impress other Raiders. | Uncommon | 1000 | 0.2 kg | Quick Use |
| Shield Recharger | A handheld repair kit that recharges a shield on use. | Uncommon | 520 | 0.15 kg | Quick Use |
| Shotgun ammo | Shotgun shells used for shotguns. | Common | 20 | 0.085 kg | Ammunition |
| Shotgun Choke I | Slightly reduces base dispersion. | Common | 640 | 0.25 kg | Modification |
| Shotgun Choke II | Moderately reduces base dispersion. | Uncommon | 2000 | 0.5 kg | Modification |
| Shotgun Choke II Blueprint | Lets you craft a Shotgun Choke II | Legendary | 5000 | - | Blueprint |
| Shotgun Choke III | Significantly reduces base dispersion. Compatible with: II Toro, Vulcano | Rare | 5000 | 0.75 kg | Modification |
| Shotgun Choke III Blueprint | Lets you craft a Shotgun Choke III | Legendary | 5000 | - | Blueprint |
| Shotgun Parts | Specialized components from shotgun-type weapons, used in crafting. | Rare | 700 | 0.4 kg | Material |
| Shotgun Silencer | Moderately reduces the amount of noise produced when firing. | Epic | 5000 | 0.5 kg | Mods |
| Shotgun Silencer Blueprint | Lets you craft a Shotgun Silencer. Moderately reduces the amount of noise produced when firing. | Legendary | 5000 | - | Blueprint |
| Showstopper | A grenade that detonates after a delay, stunning enemies within its radius. | Rare | 2100 | 0.4 kg | Throwable |
| Showstopper Blueprint | Lets you craft a Showstopper. | Legendary | 5000 | - | Blueprint |
| Shrapnel Grenade | A makeshift fuze grenade that bursts into razor-sharp fragments upon detonation. | Uncommon | 800 | 0.15 kg | Throwable |
| Shredder Gyro | Can be recycled into crafting materials. | Rare | 3000 | 1 kg | Recyclable |
| Signal Amplifier | Can be recycled into crafting materials. | Rare | 3000 | 1.5 kg | Recyclable |
| Silencer I | Slightly reduces the amount of noise produced when firing. | Uncommon | 2000 | 0.25 kg | Modification |
| Silencer I Blueprint | Lets you craft a Silencer I | Legendary | 5000 | - | Blueprint |
| Silencer II | Moderately reduces the amount of noise produced when firing. Compatible with: Rattler, Ferro, Tempest, Arpeggio, Bettina. | Rare | 5000 | 0.5 kg | Modification |
| Silencer II Blueprint | Lets you craft a Silencer II | Legendary | 5000 | - | Blueprint |
| Silencer III | Significantly reduces the amount of noise produced when firing. | Epic | 7000 | 0.75 kg | Modification |
| Silver Teaspoon Set | A shining, shimmering set of refinement and elegance. | Rare | 3000 | 0.3 kg | Trinket |
| Simple Gun Parts | Used to craft weapons. Can be recycled into scrap metal. | Uncommon | 330 | 0.3 kg | Topside Material |
| Smoke Grenade | A grenade that creates a lingering smoke cloud on impact, blocking visibility from other Raiders. | Rare | 1000 | 0.2 kg | Recyclable |
| Smoke Grenade Blueprint | Lets you craft a Smoke Grenade | Legendary | 5000 | - | Blueprint |
| Smoke Grenade Trap | A laser trip wire that detonates a Smoke Grenade. | Rare | 640 | 0.5 kg | Quick Use |
| Snap Blast Grenade | A grenade that sticks to surfaces, dealing explosive damage after a short delay. | Uncommon | 800 | 0.2 kg | Quick Use |
| Snap Hook | A gadget that allows the user to scale structures and cover large distances. | Legendary | 14000 | 5 kg | Quick Use |
| Snap Hook Blueprint | Lets you craft a Snap Hook | Legendary | 5000 | - | Blueprint |
| Snitch Scanner | Gathered from ARC Snitches. Can be recycled into ARC Alloy. | Uncommon | 2000 | 0.75 kg | Recyclable |