| Il Toro Blueprint | Lets you craft an Il Toro | Legendary |  5000 | - | Blueprint |
| Il Toro I | Pump-action shotgun with large bullet spread, sharp falloff, and high damage output. | Uncommon | 5000 | 8 kg | Weapon |
| Il Toro II | Pump-action shotgun with large bullet spread, sharp falloff, and high damage output. | Uncommon | 7000 | 8 kg | Weapon |
| Il Toro III | Pump-action shotgun with large bullet spread, sharp falloff, and high damage output. | Uncommon | 10000 | 8 kg | Weapon |
| Il Toro IV | Pump-action shotgun with large bullet spread, sharp falloff, and high damage output. | Uncommon | 13000 | 8 kg | Weapon |
| Impure ARC Coolant | Obtained from ARC enemies or activities. Can be recycled into chemicals. | Uncommon | 640 | 1 kg | Recyclable |
| Industrial Battery | Can be recycled into crafting materials. | Rare | 1000 | 2 kg | Recyclable |
| Industrial Charger | Can be recycled into crafting materials. | Rare | 1000 | 2 kg | Recyclable |
| Industrial Magnet | Can be recycled into crafting materials. | Rare | 1000 | 2 kg | Recyclable |
| Ion Sputter | Can be recycled into Crafting Materials | Epic | 6000 | 1.5 kg | Recyclable |
| Jolt Mine | A proximity triggered mine that pops up and stuns anything within its radius. | Rare | 850 | 0.2 kg | Quick Use |
| Jolt Mine Blueprint | Lets you craft a Jolt Mine | Legendary | 5000 | - | Blueprint |
| Junior (Outfit) | This is the Junior cosmetic outfit | Common | 0 | - | Cosmetic |
| Jupiter | A bolt-action sniper rifle with exceptional damage output and accuracy, but slow handling. | Legendary | 34000 | 9 kg | Weapon |
| Jupiter Blueprint | Fires projectiles at an incredible velocity, capable of damaging multiple targets with one shot. | Legendary | 5000 | - | Blueprint |
| Kettle I | Semi-automatic assault rifle. Quick and accurate, but has low bullet velocity and takes a long time reload. | Common | 840 | 7 kg | Weapon |
| Kettle II | Semi-automatic assault rifle. Quick and accurate, but has low bullet velocity and takes a long time reload. | Common | 2000 | 7 kg | Weapon |
| Kettle III | Semi-automatic assault rifle. Quick and accurate, but has low bullet velocity and takes a long time reload. | Common | 3000 | 7 kg | Weapon |
| Kettle IV | Semi-automatic assault rifle. Quick and accurate, but has low bullet velocity and takes a long time reload. | Common | 5000 | 7 kg | Weapon |
| Kinetic Converter | Moderately increases fire rate. | Legendary | 7000 | 0.75 kg | Modification |
| Kinetic Converter Blueprint | Lets you craft a Kinetic Converter | Legendary | 0 | - | Blueprint |
| Laboratory Reagents | Can be recycled into crafting materials. | Rare | 2000 | 3 kg | Recyclable |
| Lance's Mixtape (5th Edition) | Lance has personally planted a number of these around the Rust Belt, for some reason. | Epic | 10000 | 0.2 kg | Trinket |
| Laser Trap: Fire Blueprint | Lets you craft Laser Trap: Fire | Legendary | 0 | - | Blueprint |
| Laser Trap: Gas Blueprint | Lets you craft Laser Trap: Gas | Legendary | 0 | - | Blueprint |
| Laser Trap: Lure | A deployable laser trip wire that detonates a Lure Grenade. | Common | 0 | 0.5 kg | Quick Use |
| Laser Trap: Smoke | Lets you craft Laser Trap: Smoke | Uncommon | 0 | 0.5 kg | Quick Use |
| Launcher Ammo | Anti-ARC payloads used mainly by the Hullcracker | Rare | 250 | 1 kg | Ammunition |
| Launcher Ammo Blueprint | Anti-ARC payloads used mainly by the Hullcracker. | Legendary | 5000 | - | Blueprint |
| Leaper Pulse Unit | Can be thrown to create a violent singularity | Epic | 5000 | 1 kg | Throwable |
| Lemon | Can be consumed for a small amount of stamina | Common | 640 | 0.2 kg | Nature |
| Lidar Scanner | A laser-based scanner used to detect the subtlest changer to the Earth's surface. | Common | 0 | 0.25 kg | Trinket |
| Light Ammo | Light bullets used mainly with SMGs and light handguns. Such as Kettle, Stitcher, Burletta, Hairpin and Bobcat. | Common | 4 | 0.017 kg | Ammunition |
| Light Bulb | Without light, life underground would be impossible. | Uncommon | 2000 | 0.2 kg | Trinket |
| Light Gun Parts | Assorted spare parts used for pistols and SMGs. | Rare | 700 | 0.3 kg | Topside Material |
| Light Gun Parts Blueprint | Lets you craft Light Gun Parts | Legendary | 5000 | - | Blueprint |
| Light Impact Grenade | A grenade that detonates on impact, dealing explosive damage in a small radius. | Common | 270 | 0.1 kg | Quick Use |
| Light Shield | A lightweight shield that offers limited protection without severely impacting mobility. | Uncommon | 640 | 5 kg | Shield |
| Lightweight Stock | Moderately improves ADS & draw speed. | Epic | 5000 | 0.25 kg | Modification |
