| Jupiter | A bolt-action sniper rifle with exceptional damage output and accuracy, but slow handling. | Legendary |  27500 | 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 |
| 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: Lure | A deployable laser trip wire that detonates a Lure Grenade. | Common | 0 | 0.5 kg | Quick Use |
| Launcher Ammo | Anti-ARC payloads used mainly by the Hullcracker | Rare | 250 | 1 kg | Ammunition |
| 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 | Uncommon | 640 | 0.2 kg | Nature |
| "Leviathan's Crown" Ship Model | A majestic sight in any era, this fierce merchant ship is indifferent to the aerodynamic benefits of fiberglass technology. | Legendary | 10000 | 0.5 kg | Trinket |
| 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 |
| Lightweight Stock Blueprint | Lets you craft a Lightweight Stock | Legendary | 5000 | - | Blueprint |
| Li'l Smoke Grenade | A grenade that pops a thick but small smoke cloud on impact, blocking visibility from ARC and other Raiders. | Common | 300 | 0.15 kg | Quick Use |
| Looting Mk. 1 | Basic looting augment. More backpack slots and weight capacity, but low defensive and tactical capability. | Uncommon | 640 | 1 kg | Augment |
| Looting Mk. 2 | Significantly increases looting potential; adds slots for trinkets. | Rare | 2000 | 2 kg | Augment |
| Looting MK. 3 (Cautious) | A looting augment that swaps some carry capacity to increase survivability. | Epic | 5000 | 3 kg | Augment |
| Looting MK. 3 (Safekeeper) | A looting augment that trades weight and utility for increased looting potential. | Epic | 5000 | 5 kg | Augment |
| Looting MK. 3 (Safekeeper) Blueprint | Lets you craft the Looting Mk. 3 (Safekeeper) Augment. | Legendary | 5000 | - | Blueprint |
| Looting MK. 3 (Survivor) | A heavy-duty pack mule augment. Large weight capacity and large backpack space. | Epic | 5000 | 4 kg | Augment |
| Looting MK. 3 (Survivor) Blueprint | A heavy-duty pack mule augment. Large weight capacity and large backpack space. | Legendary | 5000 | - | Blueprint |
| Lure Grenade | A noisy device that sticks to surfaces, distracting nearby ARC machines and drawing their fire. | Uncommon | 1000 | 0.4 kg | Quick Use |
| Lure Grenade Blueprint | Lets you craft a Lure Grenade | Legendary | 5000 | - | Blueprint |
| Lure Grenade Trap | A laser trip wire that detonates a Lure Grenade. | Uncommon | 1000 | 0.25 kg | Quick Use |
| Magnet | Fun thing to put on a fridgerator. | Uncommon | 300 | 0.25 kg | Topside Material |
| Magnetic Accelerator | Used to craft advanced weapons. | Epic | 5500 | 1 kg | Refined Material |
| Magnetron | Can be recycled into crafting materials | Epic | 6000 | 1.5 kg | Recyclable |
| Marano Market Business Card | The scribbled writing on this business card almost obscures the logo of Marano's market. | Common | 100 | 0.5 kg | Trinket |
| Mastery Medal (Backpack Charm) | Maintain Wildcard I trials rank until the season end. | - | 0 | - | Misc |
| Matriarch Reactor | Can be recycled into crafting materials. | Legendary | 11000 | 10 kg | Recyclable |
