Borderlands 4 is filled with Legendary Items that you can obtain from various bosses or from Vending Machines. Each of these items has a unique effect and is crucial in specific builds. Here are all the Borderlands 4 Legendary Weapons, Items, and Class Mods, and where you can get them:
All Borderlands 4 Legendary Items (Weapons, Shields, Mods, and Repkits)
🤖Note: The loot tables are categorized by region, where you can find the boss that drops the item.
Fadefields
|
Item |
Item Type and Brand |
Location |
Boss Drop |
Related Quest |
Effect |
|---|---|---|---|---|---|
|
Cindershelly |
Energy Shield |
Abandoned Auger Mine |
Backhive |
Crystal Brawl |
When Damaged, grants a stack of Resolve. Each stack of Resolve reduces damage taken by 2%, to a maximum of 25 stacks. When the shield breaks, release a Nova with damage increased by 20% for each stack of Resolve. |
|
Stop Gap |
Sniper - Ladof |
Abandoned Auger Mine |
Backhive |
Crystal Brawl |
20% Fire Rate for 750% DMG |
|
Mega Triple Bypass |
Repkit |
Abandoned Auger Mine |
Backhive |
Crystal Brawl |
This Repkit has 3 Charges and has a 30% chance to replenish a Charge on kill. |
|
Waterfall |
Grenade |
Dissected Plateau |
Bio-Bulkhead |
One Fell Swoop |
Causes additional explosions when damaging targets |
|
Budget Deity |
Pistol - Tediore |
Dissected Plateau |
Bio-Bulkhead |
One Fell Swoop |
Launches 2 combo balls that place Atlas seeker on enemies |
|
Sho Kunai |
Grenade |
Dissected Plateau |
Bio-Bulkhead |
One Fell Swoop |
Grants +10% movement speed with each consecutive hit, max 7 stacks |
|
Defibrillator |
Repkit |
Blacklime Bunker |
Core Observer |
None |
While below 20% HP, 50% chance to replenish Repkit Charge |
|
Divided Focus |
AR - Tediore |
Blacklime Bunker |
Core Observer |
None |
Fires bouncing projectiles that pierce enemies |
|
Bully |
Pistol - Order |
Blacklime Bunker |
Core Observer |
None |
When Gun Shields are activated, launches an Attack Drone every 14s |
|
Chaumurky Chuck |
Grenade |
The Pitted Stain |
Foundry Freaks |
None |
Continuously homes in on a target |
|
Bloody Lumberjack |
AR - Daedalus |
The Pitted Stain |
Foundry Freaks |
None |
Impacted bullets deal damage again |
|
Aegon’s Dream |
AR - Ladof |
Horace’s Oversight |
Horace |
Down and Outbound |
Double-barreled shoots Incendiary & Cryo |
|
Pacemaker |
Repkit |
Horace’s Oversight |
Horace |
Down and Outbound |
Passively gain HP over time, increasing in rate when HP is low |
|
Lucky Clover |
Pistol - Order |
Horace’s Oversight |
Horace |
Down and Outbound |
On Reload, fires 2 homing rockets |
|
Bio-Robot |
Class Mod |
Fortress Indomita |
Idolator Sol |
Rush the Gate |
Entanglement creates alternating Cryo hazards & Radiation Hazards |
|
Dancer |
Class Mod |
Fortress Indomita |
Idolator Sol |
Rush the Gate |
+100% Overdrive Bonus. Overdrive ends on Action Skill end |
|
Goremaster |
Shotgun - Ripper |
Fortress Indomita |
Idolator Sol |
Rush the Gate |
+30% dmg to enemies below 30% HP |
|
Onslaught |
SMG - Ladof |
Fortress Indomita |
Idolator Sol |
Rush the Gate |
30% chance for each shot to deal extra dmg and not consume ammo |
|
Golden God |
Shotgun - Ripper |
Fortress Indomita |
Idolator Sol |
Rush the Gate |
While overheating, Bulletforge doesn't break, but increases ammo use |
|
Ravenfire |
Heavy - Torgue |
Dissected Plateau |
Inceptus |
*Collect all Vault Key Fragments |
Explosions radiate outward from the point of impact |
|
Extra Medium |
Energy Shield |
Dissected Plateau |
Inceptus |
*Collect all Vault Key Fragments |
Explodes on fill & depletion, dealing [amount] dmg |
|
Husky Friend |
Shotgun - Tediore |
Dissected Plateau |
Inceptus |
*Collect all Vault Key Fragments |
Husky Auto Turret |
|
Elementalist |
Class Mod |
Dissected Plateau |
Inceptus |
*Collect all Vault Key Fragments |
All Affinity Skills gain a stack when one does. +Movement speed for each stack |
|
Filantropo |
Class Mod |
Dissected Plateau |
Inceptus |
*Collect all Vault Key Fragments |
Spawns a free grenade when action skill is retriggered |
|
Complex Root |
Sniper - Maliwan |
Tipping Point Order Bunker |
Mimicron |
None |
Spawns additional diverging projectiles along its path |
|
UAV |
Grenade |
Tipping Point Order Bunker |
Mimicron |
None |
Spawns a bomber drone that carpet bombs in direction thrown |
|
Luty Madlad |
SMG - Daedalus |
Tipping Point Order Bunker |
Mimicron |
None |
Overheats & Cools down faster |
|
Onion |
Armor Shield |
Idolator’s Noose |
Sludgemaw |
All Charged Up |
On Armor Segment break, grants immunity to dmg for 2s |
|
Birt’s Bees |
SMG - Ladof |
Idolator’s Noose |
Sludgemaw |
All Charged Up |
Spews erratic projectiles that home in on targets |
|
Kickballer |
Shotgun - Maliwan |
Idolator’s Noose |
Sludgemaw |
All Charged Up |
Alt fire launches bouncing energy disc |
|
Lead Balloon |
Shotgun - Torgue |
Coastal Bonescape |
Splashzone |
Recruitment Drive |
Projectiles float up and spawn child projectiles upon exploding |
|
Fireworks |
Armor Shield |
Coastal Bonescape |
Splashzone |
Recruitment Drive |
On kill, spawns homing missiles |
|
Jelly |
Grenade |
Coastal Bonescape |
Splashzone |
Recruitment Drive |
Spawns duplicates on bounce |
|
Disc Jockey |
Heavy - Ripper |
The Prospects |
Sydney Pointylegs |
None |
Disc projectiles gain +20% dmg per bounce up to 5 times |
|
Noisy Cricket |
Pistol - Order |
The Prospects |
Sydney Pointylegs |
None |
Blasts a radial sonic wave |
|
Swarm |
Grenade |
The Prospects |
Sydney Pointylegs |
None |
On explosion splits into 3 homing grenades. Splits twice |
|
Streamer |
Heavy - Ripper |
The Killing Floors |
The Oppressor |
A Lot To Process |
Launches stationary Projectiles that fire beams forward |
|
Asher’s Rise |
Sniper - Maliwan |
The Killing Floors |
The Oppressor |
A Lot To Process |
Crits apply status effects instead of increased impact damage |
|
Blood Analyser |
Repkit |
The Killing Floors |
The Oppressor |
A Lot To Process |
On use, grants immunity to last Elemental dmg taken for 7 seconds |
|
Darkbeast |
SMG - Daedalus |
Coastal Bonescape |
Voraxis |
Crystal Brawl |
Bullets pierce enemies, and have 5% chance to cause an explosion |
|
Potato Thrower IV |
AR - Torgue |
Coastal Bonescape |
Voraxis |
Crystal Brawl |
Fires explosive potato projectiles that deal splash damage; fires full auto |
|
Buoy |
Grenade |
Coastal Bonescape |
Voraxis |
Crystal Brawl |
Releases an ordinance that floats before exploding. |
Terminus Range
|
Item |
Item Type and Brand |
Location |
Drops from |
Related Quest |
Effect |
|---|---|---|---|---|---|
|
Finnity XXX-L |
Sniper - Ladof |
The Lowering March |
Battle Wagon |
None |
Doesn't consume ammo while overheating |
|
Compleation |
Armor Shield |
The Lowering March |
Battle Wagon |
None |
While full, instantly lose an Armor Segment |
|
Boomslang |
Sniper - Jakobs |
Bittervein |
Bramblesong |
Crystal Brawl |
After Reload, first crit ricochets a sticky projectile to up to 3 nearby enemies |
|
Convergence |
Shotgun - Ripper |
Bittervein |
Bramblesong |
Crystal Brawl |
Every time a pellet hits an enemy, three extra pellets appear around the target, all honing in for maximum damage |
|
Destructo Disco |
Grenade |
Bittervein |
Bramblesong |
Crystal Brawl |
Slow spinning disc that deals high status dmg in its beam |
|
Hot Slugger |
Shotgun - Jakobs |
Craven's Nook |
Callous Harbinger |
None |
On kill, +30% dmg for 10s for up to 3 stacks |
|
Gatling Gun |
Heavy - Ladof |
Craven's Nook |
Callous Harbinger |
None |
Extremely High Fire Rate & Projectiles home in on target |
|
Kaleidosplode |
Shotgun - Maliwan |
Craven's Nook |
Callous Harbinger |
None |
Fire either in full-auto or in four-round bursts. When you aim down the sights, each bullet can hit with a random elemental effect. |
|
Hellwalker |
Shotgun – Jakobs |
Old Scrape |
Meathead Riders |
None |
A guitar riff plays with every shot. |
|
War Paint |
Repkit |
The Old Scrape |
Meathead Riders |
None |
+30% Fire Rate & Movement Speed for 15s. -2s cooldown when damaged |
|
Bottled Lightning |
Heavy - Maliwan |
The Low Leys |
Origo |
*Collect All Terminus Vault Key Fragments |
Unknown |
|
Shatterwight (Amon) |
Class Mod |
The Low Leys |
Origo |
*Collect All Terminus Vault Key Fragments |
Forgewaves deals Melee. Melee while Scourge for +Cryo Efficiency & Radius |
|
Spirits (Vex) |
Class Mod |
The Low Leys |
Origo |
*Collect All Terminus Vault Key Fragments |
Command skills grant +Kinetic Minion gun dmg. Command skills deal gun dmg |
|
Buster (Rafa) |
Class Mod |
The Low Leys |
Origo |
*Collect All Terminus Vault Key Fragments |
APOPHIS Lance has +25% chance to not consume charges. +chance/charge |
|
Driver (Harlowe) |
Class Mod |
The Low Leys |
Origo |
*Collect All Terminus Vault Key Fragments |
Chroma Accelerator drains HP to 1 for amped version & gains 20% lifesteal |
|
Kaoson |
SMG - Ladof |
The Low Leys |
Origo |
*Collect All Terminus Vault Key Fragments |
Shoots Torgue stickies |
|
Watts 4 Dinner |
Energy Shield |
The Low Leys |
Origo |
*Collect All Terminus Vault Key Fragments |
12% chance for hits to drop overshields that grant +25% shock dmg |
|
Sparky Shield |
Energy Shield |
Whistler's Maw |
Shadowpelt |
Crystal Brawl |
While not full, periodically shocks nearby enemies |
|
Vamoose |
Sniper - Ripper |
Whistler's Maw |
Shadowpelt |
Crystal Brawl |
When you shoot while zoomed in, the gun fires your entire magazine in one go |
|
Slippy |
Grenade |
Whistler's Maw |
Shadowpelt |
Crystal Brawl |
Does melee damage, explodes upon bouncing, bounces up to 3 times |
|
Roach |
Pistol - Torgue |
Grindstone of the Worthy |
Skull Orchid |
Crystal Brawl |
Shoots eggs that hatch flying roaches when attached to flesh, living or dead |
|
Oak-Aged Cask |
Armor Shield |
Grindstone of the Worthy |
Skull Orchid |
Crystal Brawl |
Has only 1 segment. Dropped boosters completely fill shield |
|
Linebacker |
Shotgun - Torgue |
Cuspid Climb |
Skyspanner Kratch |
Shadow of the Mountain |
Bouncing projectiles increase dmg by 25% & radius by 35% per bounce |
|
Hellfire |
SMG - Ripper |
Cuspid Climb |
Skyspanner Kratch |
Shadow of the Mountain |
Every bullet you shoot causes a fiery explosion |
|
Hoarder |
Armor Shield |
Cuspid Climb |
Skyspanner Kratch |
Shadow of the Mountain |
On kill, 50% chance to spawn Ammo Booster that instantly refills gun |
|
Sideshow |
Pistol - Tediore |
The Wireworks |
The Divisioner |
None |
Triggers a target shooting game, refill up to 2 ammo per target hit |
|
Inkling |
Heavy - Ladof |
The Wireworks |
The Divisioner |
None |
Shoots bouncing projectiles that leave elemental splash where bounced |
|
Super Soldier |
Energy Shield |
Umbral Foundry |
Vile Lictor |
His Vile Sanctum |
Grant overshield on fill. While full, +25% fire rate, speed, & 1 ammo/s |
|
Blockbuster |
Grenade |
Umbral Foundry |
Vile Lictor |
His Vile Sanctum |
Splits into MIRV and bouncy grenades |
|
Ruby’s Grasp |
Pistol - Tediore |
Umbral Foundry |
Vile Lictor |
His Vile Sanctum |
Reload fires 4 homing copies |
|
Generator (Harlowe) |
Class Mod |
Umbral Foundry |
Vile Lictor |
His Vile Sanctum |
Flux Generator grants -50% Action Skill Duration & +200% Action Skill Power |
|
Blacksmith (Amon) |
Class Mod |
Umbral Foundry |
Vile Lictor |
His Vile Sanctum |
Kill Skill. Restores some duration to Forgedrones. +gun dmg per active drone |
|
Instigator (Rafa) |
Class Mod |
Umbral Foundry |
Vile Lictor |
His Vile Sanctum |
Firing Peace Cannon gains stack of Instigator, +2% Gun dmg per stack |
|
Undead Eye (Vex) |
Class Mod |
Umbral Foundry |
Vile Lictor |
His Vile Sanctum |
Sniper Rifle kills trigger Blood Shot. 33% chance on crit to trigger as well |
|
Rangefinder |
Pistol - Daedalus |
Lictor’s Black Site |
Vile Prototype |
Dark Subject |
Bullets have explosive rounds. Shots cycle between three small bullet bursts, two medium bullet bursts, and one big accurate bullet. |
|
Heavyweight |
Armor Shield |
Lictor’s Black Site |
Vile Prototype |
Dark Subject |
Melee depletes a segment for +100% Melee Dmg. +50% while empty |
|
King’s Gambit |
Pistol - Jakobs |
Lictor’s Black Site |
Vile Prototype |
Dark Subject |
When shot, thrown weapon ricochets projectiles to nearby enemies |
Carcadia Burn
|
Item |
Item Type and Brand |
Location |
Drops from |
Related Quest |
Effect |
|---|---|---|---|---|---|
|
Ohm I Got |
SMG - Maliwan |
Elpis Orbital Shatterfield |
Moon-Maddened Callis |
Another Day, Another Universe |
+50% dmg when consuming shield instead of ammo |
|
Gamma Void |
Heavy - Maliwan |
Elpis Orbital Shatterfield |
Moon-Maddened Callis |
Another Day, Another Universe |
Singularity for 10s, enemies take +40% Radiation dmg over time |
|
Queen’s Rest |
Pistol - Torgue |
Moon-Called Throne |
Queen Callis |
Her Flaming Vision |
High velocity. 30% chance to spawn homing sticky projectiles |
|
Esgrimidor (Rafa) |
Class Mod |
Moon-Called Throne |
Queen Callis |
Her Flaming Vision |
Melee gains +10% crit chance. Crits with Melee restore +5% Action Skill Duration |
|
Skeptic (Harlowe) |
Class Mod |
Moon-Called Throne |
Queen Callis |
Her Flaming Vision |
Slam Stasised for R & O Darts. Shot status-effected restores 5% of Action Skill |
|
Illusionist (Vex) |
Class Mod |
Moon-Called Throne |
Queen Callis |
Her Flaming Vision |
Specters & Reapers have chance to be Badasses, guaranteed every 90s |
|
Viking (Amon) |
Class Mod |
Moon-Called Throne |
Queen Callis |
Her Flaming Vision |
Crucible gains +2 charges, +duration, +dmg reduction while active |
|
Anarchy |
Shotgun - Tediore |
Arch of Radix |
Radix |
*Collect All Carcadia Burn Vault Key Fragments |
Auto-Reload or Kills grant +15% Dmg & -15% Acc. Up to 20 stacks |
|
Adrenaline Pump |
Repkit |
Arch of Radix |
Radix |
*Collect All Carcadia Burn Vault Key Fragments |
Automatically restores HP on Second Wind |
|
Teen Witch |
Class Mod |
Arch of Radix |
Radix |
*Collect All Carcadia Burn Vault Key Fragments |
When Max HP, Lifesteal partially applies to shields. While full, grants overshield |
|
Witch (Vex) |
Class Mod |
Arch of Radix |
Radix |
*Collect All Carcadia Burn Vault Key Fragments |
When Max HP, Lifesteal partially applies to shields. While full, grants overshield |
|
Scientist (Harlowe) |
Class Mod |
Arch of Radix |
Radix |
*Collect All Carcadia Burn Vault Key Fragments |
Shock auto Entangles and Irradiates enemy & arcs Shock to nearby enemies |
|
Grenazerker (Rafa) |
Class Mod |
Arch of Radix |
Radix |
*Collect All Carcadia Burn Vault Key Fragments |
Throwing a grenade or Tediore gun throws another |
|
Forge Master (Amon) |
Class Mod |
Arch of Radix |
Radix |
*Collect All Carcadia Burn Vault Key Fragments |
All Forgeskills can now be used once while on Cooldown |
|
Firepot |
Grenade |
The Excrucible |
Leader Willem |
Enter the Elci Pt. 1 and 2, The Council Divided, A Traitor Within, The Mole's Gambit |
Spawns homing Torgue Stickies over time |
|
Zipper |
Pistol - Daedalus |
The Excrucible |
Leader Willem |
Enter the Elci Pt. 1 and 2, The Council Divided, A Traitor Within, The Mole's Gambit |
+75% crit dmg & dmg when hitting a target in the back |
|
Rainbow Vomit |
Shotgun - Jakobs |
The Excrucible |
Leader Willem |
Enter the Elci Pt. 1 and 2, The Council Divided, A Traitor Within, The Mole's Gambit |
Shoots Element, Element, and Element droplets |
|
Chuck |
AR - Tediore |
The Crawlcroft |
Fractis |
None |
Auto-throw |
|
Protean Cell |
Armor Shield |
The Crawlcroft |
Fractis |
None |
Ground slam drains shield over time for +40% shock dmg |
|
Oscar Mike |
AR - Daedalus |
The Yawning Yard |
Genone |
Fault Finding |
First half of mag deals +50% dmg. Alt grenade launcher spawns Fire Hazard |
|
Recursive |
Grenade |
The Yawning Yard |
Genone |
Fault Finding |
Hovers above enemies, firing a beam downward |
|
Stray |
Sniper - Ripper |
Tendercage Ripper Drill Site |
Pango & Bango |
None |
Fires 2 secondary bullets that home in on nearby enemies |
|
Phantom Flame |
Pistol - Jakobs |
Tendercage Ripper Drill Site |
Pango & Bango |
None |
While ADS, lock on to targets and shoot out whole mag |
|
Prince Harming |
SMG - Ripper |
Tendercage Ripper Drill Site |
Pango & Bango |
None |
Dmg self for stack of Cruelty; On kill, restores overshield. Max 30 stacks |
|
Spinning Blade |
Grenade |
Saw’s Clench |
Rippa Roadbirds |
None |
Catch the rebound to refund a grenade charge |
|
Wombo Combo |
AR - Ladof |
Saw’s Clench |
Rippa Roadbirds |
None |
Underbarrel rockets fire while shooting |
|
AF1000 |
Repkit |
Trinket Crevass |
Rocken Roller |
None |
+100% Duration. -50% Cooldown |
|
San Saba Songbird |
Pistol - Jakobs |
Trinket Crevass |
Rocken Roller |
Crystal Brawl |
Deals +100% dmg for 5s after weapon swap. [Bugged: Infinitely stacks] |
|
T.K.'s Wave |
Shotgun - Jakobs |
Trinket Crevass |
Rocken Roller |
Crystal Brawl |
Has unlimited Magazine size but can break overheating. Critical hits also ricochet to nearby enemies. |
|
Katagawa’s Revenge |
Sniper - Maliwan |
Queen’s Cradle |
Driller Hole |
Unpaid Tab |
Has two fire mods: Fire and Lightning. Both releases three orbs that either explode on the ground or release lightning bolts. |
|
Fuse |
Grenade – Daedalus |
Queen’s Cradle |
Driller Hole |
Unpaid Tab |
Fire mortars toward enemies with each dealing 305 Damage. |
|
G.M.R. |
AR - Order |
Queen’s Cradle |
Driller Hole |
Unpaid Tab |
While ADS: +100% dmg & shot cost, +50% Fire rate |
Dominion
|
Bod |
Shotgun - Daedalus |
The Toil of Spoiling Vi |
Axemaul |
Crystal Brawl |
Counts as a Shotgun, AR, Sniper, Pistol, & SMG |
|
Kill Spring |
Repkit |
The Toil of Spoiling Vi |
Axemaul |
Crystal Brawl |
Kills convert 100% excess dmg into healing orbs that seek allies |
|
Buzz Axe |
Grenade |
The Toil of Spoiling Vi |
Axemaul |
Crystal Brawl |
Throwing hits can be critical and have very low recharge |
|
Bugbear |
AR - Torgue |
Fades District |
Bio-Thresher Omega |
One Gassy Issue and One Slimey Issue |
Scales up to +100% dmg & +200% splash radius based on emptiness of mag |
|
Truck |
Sniper - Jakobs |
Fades District |
Bio-Thresher Omega |
One Gassy Issue and One Slimey Issue |
Uknown |
|
Whiskey Foxtrot |
AR - Ladof |
Ironwall Resolve |
Directive-O |
None |
Underbarrel Shotgun debuffs enemies to take more damage. Switches to a secondary Full-Auto magazine |
|
Bonnie & Clyde |
AR - Jakobs |
Ironwall Resolve |
Directive-O |
None |
On kill, grants +100% dmg to alt fire mode & refills mag |
|
Rowan’s Charge |
AR - Jakobs |
Ironwall Resolve |
Directive-O |
None |
Grants 20% Crit chance & refunds 2 ammo on Crit |
|
Timekeeper’s New Shield |
Armor Shield |
Terminus District, Upper Dominion |
Timekeeper |
The Timekeeper’s Order |
0 Capacity. +HP by [amount]. Grants [amount]/s HP regen. +33% dmg resist |
|
Borstel Ballista |
Sniper - Jakobs |
Terminus District, Upper Dominion |
Timekeeper |
The Timekeeper’s Order |
Shots spiral and split into many bullets after a certain distance |
|
Symmetry |
Sniper - Order |
Terminus District, Upper Dominion |
Timekeeper |
The Timekeeper’s Order |
Fires from reserve Ammo while charging |
|
Plasma Coil |
SMG - Mawilan |
Terminus District, Upper Dominion |
Timekeeper |
The Timekeeper’s Order |
Shoot plasma balls in an 8-rounds burst fire. - Always in Shock and Radiation. - Damage dealt by this weapon are counted as splash damage. |
|
Star Helix |
AR - Daedalus |
Terminus District, Upper Dominion |
Timekeeper |
The Timekeeper’s Order |
Projectiles can be fired vertically or horizontally |
|
Goalkeeper |
AR - Order |
Terminus District |
Vile Ted & The Experiments |
Below the Surface |
When Gun Shield is depleted, grants +50% dmg for 15s |
|
Seventh Sense |
Pistol - Jakobs |
Terminus District |
Vile Ted & The Experiments |
Below the Surface |
Hits spawn floating orbs that home in on reload |
Pre-Order Legendaries
|
Item |
Item Type and Brand |
Effect |
|---|---|---|
|
Transmitter |
Grenade |
Throws stationary drone for a few seconds |
|
First Impression |
AR - Daedalus |
Chance to Crit based on target's HP% |
|
Matador's Match |
SMG - Maliwan |
Shots spiral and ricochet around |
|
Sidewinder |
Heavy - Torgue |
Heat-seeking grenade that penetrates multiple targets and deploys sticky bombs. |
Others
|
Item |
Item Type and Brand |
How to Obtain |
Effect |
|---|---|---|---|
|
Frangible |
SMG – Daedalus |
Vending Machine |
Has parts from all manufacturers. |
|
Forsaken Chaos |
Shotgun |
Twitch Drop (until September 30, 2025) |
Scales with your level |
|
Midnight Defiance |
Sniper Rifle |
Twitch Drop (until September 30, 2025) |
Whenever you land a hit, extra projectiles burst out from nearby enemies |
Each Legendary Weapon drop can roll to have a random manufacturer piece, even if they come from different brands. This mechanic creates many interactions that can significantly improve the effectiveness of an item. Farming them multiple times until you get a specific weapon with a specific piece is highly recommended.