Borderlands 4 How to Unlock The Legendary Duper Heavy Ordnance

Duper is a Maliwan Heavy Weapon

Its special effect is called Holo-Barrel - Shoots holographic barrels that pierce enemies and attach to the world. Shooting attached barrels causes it to explode, dealing damage.

Unlock Location:

• Progress through the (A Zane to Kill For) DLC until reaching the Boss CL34n.R
• You will find CL34n.R in far Bottom Left of the map.

Farm Method:

• Defeat CL34n.R to get a chance at the Duper.
• After use the Encore Machine nearby to reset the fight.
• Repeatedly defeat CL34n.R until the Duper drops.