From Halopedia, the Halo wiki

"Whiplash" redirects here. For the medal in Halo Infinite, see Whiplash (medal).
H5G RailgunW.png
Production overview


Acheron Security[1][2][3][4][5][6]


Railgun carbine



43.6 inches (111 cm)[1][4][7][5]


2.9 inches (7.4 cm)[1][4][7]


12.5 inches (32 cm)[1][4][7]


14.9 kilograms (33 lb)[7]

Ammunition type:

Proximity airburst fuse projectiles[6]


2 slugs[8]


Electromagnetic linear accelerator

Rate of fire:


Service history

In service:

Post-Covenant War conflicts


Whiplash is a variant of the ARC-920 railgun manufactured by Acheron Security.[6]


Design details[edit]

The Whiplash is a modified railgun developed by Acheron Security with a number of improvements over the base ARC-920 model. These changes have come thanks to recent strides in the development of compact fast-discharging energy cells and miniaturised sensors; these have allowed for the development of a railgun with a faster charge and the ability to fit multiple shots-per-magazine. Where the original ARC-920 could only fire one shot before needing to reload, the Whiplash can fire two, with the projectiles additionally fitted with a proximity airburst fuse.[6] Design-wise, it retains the standard Railgun's chassis but recolors it to a feature olive green and red stripes, along with an olive green falcon emblem in the middle part of the weapon on each side.[8]


In late 2558, Spartan-IVs serving aboard the UNSC Infinity trained with the Whiplash in War Games simulations.[8]

In-game information[edit]

Halo 5: Guardians[edit]

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List of appearances[edit]


  1. ^ a b c d Halo Waypoint, Halo 4 Interactive Guide - Weapons: Railgun (Retrieved on May 1, 2013) [local archive] [external archive]
  2. ^ Gameinformer, The Arsenal of Halo 4 (Retrieved on Dec 20, 2022) [archive]
  3. ^ Halo Waypoint, The Halo Bulletin: 8.8.12 (Retrieved on Aug 19, 2013) [archive]
  4. ^ a b c d Halo 4: The Essential Visual Guide, page 63
  5. ^ a b Halo Encyclopedia (2022 edition), page 178
  6. ^ a b c d Halo 5: Guardians, REQ card: Whiplash description "Acheron Security has recently made great strides in developing compact fast-discharge energy cells and miniaturized sensors. Improved Railgun featuring a faster charge cycle, multiple shots per magazine, and projectiles fitted with proximity airburst fuse."
  7. ^ a b c d Infinity Briefing Packet
  8. ^ a b c Halo 5: Guardians, Whiplash in-game model