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Borderlands 4 Oscar Mike Review — Legendary Assault Rifle

Published: 8/15/2026 · Updated: 11/15/2026 · As of 2026-07

Red Text
Duty called, I answered, we hung out. Duty's awesome! Today's weather is cloudy with a chance of SICK-ASS SPACE LASERS!

This review was machine-translated from the Japanese original. Numbers are checked against the original; if the wording reads oddly, the Japanese version is authoritative.

A Daedalus-made assault rifle that only the first half of the magazine gets +50% damage, and can fire an orbital laser or incendiary grenade from the underbarrel. It always has Tactical Rounds and spawns equipped with either “Space Laser” or “Incendiary Grenade” as a secondary effect, balancing firepower and rate of fire in one weapon.

⚠️ Manufacturer correction The old version note listed Manufacturer “Vladof” • Weapon type “SMG” • Source “Pango & Bango”, but all are incorrect. The correct is an Assault Rifle made by Daedalus and the source is Genone (confirmed on Lootlemon / Mobalytics / FandomWire). Corrected.

🧩 Origin of the red text Weapon name **“Oscar Mike” represents the NATO phonetic code for “O” and “M” = military radio slang “On the Move / On Mission” (known from Apex Legends, CoD, etc.). The red text “Duty called, I answered” is a militaristic joke personifying duty, and the ending “SICK-ASS SPACE LASERS!” directly ties to the weapon’s underbarrel “Space Laser”. Primary confirmation as a direct quote from a specific work is unverified (the wordplay of military slang + weapon effect is plausible). The external source is (unverified).

What kind of assault rifle? (Beginner’s perspective)

• Daedalus-made AR. Always has Tactical Rounds (first half of magazine bullets get +50% damage)
• Underbarrel (Alt-Fire) spawns as one of two types:
  • Space Laser — summons an orbital laser that deals continuous damage
  • Fragcendiary Grenades — fires an incendiary grenade that creates a Fire Hazard (burning ground), restoring 3 ammo after 20 seconds
• Front-half magazine burst → reload to fire again rhythm is strong
• Appears with all elements Kinetic/Fire/Shock/Corrosive/Cryo/Radiation

Unique Effects (Mechanics)

Tactical Rounds: Magazine first half bullets have damage +50%. Alt-Fire: Space Laser (orbital laser) or Fragcendiary Grenades (incendiary grenade + Fire Hazard).

• In-game: Holds two underbarrel types (Space Laser / Fragcendiary Grenades) + Tactical Rounds
• Web (Lootlemon):
  • Tactical Rounds — first half of magazine gets +50% bonus damage
  • Fragcendiary Grenades (Alt-Fire) — fires an incendiary grenade that creates a Fire Hazard, restoring 3 ammo after 20 seconds
  • Space Laser (Alt-Fire) — summons an orbital laser that deals damage every 0.2 seconds
• Weakness: Bonus applies only to the first half of the magazine = second half deals normal damage. Requires frequent reloading to exhaust the first half.

Drop Farming

• Farming: Repeatedly defeat the boss Genone in the Side Mission Fault Finding

Build Compatibility

Summary

• Front-half magazine gets +50% damage + underbarrel with orbital laser/incendiary grenade on a Daedalus-made AR
• Strong when you reload frequently to cycle the front-half firepower
• Obtained from Genone (Side Mission Fault Finding, ~6%)
• Name is the military slang “On the Move”, correcting the old version’s manufacturer/type/source errors

Measured Stats (Aggregated from Owned Units)

Aggregated measured values taken from screenshots of owned units. The range is the observed minimum to maximum, without conversion, rounding, or interpolation.

• The highest observed DPS is 2,175 (Lv47 / Zeroed).
• Observed prefixes (most common): Zeroed×1 / Trained×1 / Flagging Sweetening×1

Related

• Same manufacturer (Daedalus): Mercredi / Super Soldier
• Same category (Assault Rifle): Lucian’s Flank / Murmur
• Reference: Lootlemon - Oscar Mike / Borderlands Wiki - Oscar Mike