GP-20 Ultimatum

Last updated: 1.003.000
Current patch: 1.003.103

Weapons

Secondary Weapons

Special

GP-20 Ultimatum

“

A pistol front-loaded with a single, powerful explosive. The weight of the projectile limits the weapon's range.

The Ultimatum is a powerful single-shot Secondary Weapon that fires extremely destructive explosive rounds.

Procurement

The Ultimatum is unlocked on page 2 of Servants of Freedom Premium Warbond for 40 Medals.

Detailed Weapon Statistics

GP-20 Ultimatum
Fire Rate	20 rpm
Recoil	43
Sway	1.3
Ergonomics	35
Capacity	1
Reload Time	3 s
Spare Rounds	1
Starting Rounds	0
Rounds from Supply	1
Rounds from Ammo Box	1
Attacks
GP-20 Ultimatum Grenade	Projectile
GP-20 Ultimatum AoE	Explosion

GP-20 Ultimatum Grenade
Projectile
Caliber	80 mm
Mass	500 g
Initial Velocity	20 m/s
Drag Factor	50%
Gravity Factor	100%
Penetration Slowdown	25%
Damage
Standard	1000
vs. Durable	1000
Penetration
Direct	Anti-Tank II
Slight Angle	Anti-Tank II
Large Angle	Anti-Tank II
Extreme Angle	Anti-Tank II
Special Effects
Demolition Force	40
Stagger Force	50
Push Force	20

GP-20 Ultimatum AoE
Area of Effect
Inner Radius	2 m
Outer Radius	12 m
Shockwave Radius	25 m
Damage
Inner Radius	2000
Outer Radius	1999 - 0
Penetration
Inner Radius	Anti-Tank II
Outer Radius	Anti-Tank I
Shockwave	Anti-Tank II
AoE Effect
Demolition Force	40
Stagger Force	70
Push Force	60

Tactical Information

• Operating similarly to the Grenade Pistol, the Ultimatum fires a single powerful anti-tank explosive round and has to be reloaded after every shot.
  • The demolition force of 40 allows Ultimatum to demolish various structures such as Rogue Research Stations and Bug Holes from the outside. Ultimatum also has high enough armor penetration and damage output to destroy damageable structures such as Fabricators and Warp Ships.
  • The weapon has extremely short range, generally only being able to hit targets directly in front of the wielder.
  • Its greatest weakness is its nonexistent ammo capacity, only being able to carry an abysmal combat load of two grenades.
• The Ultimatum is capable of killing most enemies in the game with a single shot and destroying demo 40 structures with little difficulty.
  • Ultimatum can instantly kill any non-heavy enemy within 4 meters of the impact point. If the grenades directly impacts an enemy, it is capable of killing heavy enemies smaller than a Factory Strider. Please note that the blast radius is large enough that, without diving, medium armour is not enough to protect you from death.
  • The grenade's 40 Demolition Force allows the weapon to destroy many structures. In particular, it can destroy enemy spawners.
  • Be extremely careful of the weapon's damage radius of 12 meters, as this is only marginally greater than its standard firing range. It is very easy for players to accidentally kill themselves from firing this weapon.
• The Ultimatum's heavy and unwieldy projectile prevents it from easily being fired at faraway targets, requiring the wielder to get very close.
  • When standing still and firing parallel to the ground, the projectile can travel approximately 17 meters before falling to the ground.
  • At a 45° angle, the projectile has a practical range of approximately 30 meters.
  • When using the Raise Weapon emote while firing, the projectile has a practical range of approximately 45 meters.
  • The user's own velocity is transferred to the projectile when fired. Diving forward or using the LIFT-850 Jump Pack in tandem with firing can both greatly improve the effective range of the Ultimatum.
• Another significant weakness of the Ultimatum is its very low ammo capacity.
  • Regardless of any Armor Passives, players can never increase the amount of reserve ammunition beyond one additional grenade. They will always start with one grenade loaded in the weapon, and can only pick up one more for a total of two.
  • Conversely, this means that Ammo Boxes disproportionately benefit the Ultimatum, as each individual Ammo Box potentially means another grenade. As such Cities are the ideal environment in which to operate the weapon.
• Be wary that, like the Grenade Pistol, equipping the Ultimatum means that the player cannot fall back on a reliable Secondary Weapon to ward off enemies in the event that the Primary Weapon runs empty. This means that planning out a balanced overall loadout is significantly more challenging.

Media

• 

  Warbond Marketing

Change History

Patch

Description

1.003.101
2025-06-10

Undocumented Change

• Name changed from GP-31 to GP-20

1.003.000
2025-05-13

Changes

• Is now affected by the Hellpod Optimization Booster
• Explosion damage increased from 1000 to 2000
• Explosion inner radius decreased from 4m to 2m
• Projectile damage decreased from 3500 to 1000
• Demolition strength decreased from 50 to 40
• Sway increased from 1 to 1.3

Undocumented Change

• Projectile penetration reduced from  Anti-Tank IV to  Anti-Tank II
• Stagger radius increased from 20m to 25m

1.002.103
2025-02-11
(Mid-Patch)

Changes

• The GP-31 Ultimatum is no longer influenced by the Hellpod Optimization Booster or the Siege Ready armor passive.

1.002.101
2025-02-06
(Mid-Patch)

• Released

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Weapons

Primaries

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Secondaries

P-19 Redeemer  •  GP-31 Grenade Pistol  •  LAS-7 Dagger  •  P-113 Verdict  •  P-4 Senator  •  SG-22 Bushwhacker  •  P-72 Crisper  •  P-11 Stim Pistol  •  PLAS-15 Loyalist  •  CQC-30 Stun Baton  •  CQC-19 Stun Lance  •  P-2 Peacemaker  •  GP-20 Ultimatum  •  CQC-5 Combat Hatchet  •  LAS-58 Talon  •  CQC-2 Saber  •  P-92 Warrant

Support

MG-43 Machine Gun  •  APW-1 Anti-Materiel Rifle  •  M-105 Stalwart  •  EAT-17 Expendable Anti-Tank  •  GR-8 Recoilless Rifle  •  FLAM-40 Flamethrower  •  AC-8 Autocannon  •  MG-206 Heavy Machine Gun  •  RL-77 Airburst Rocket Launcher  •  RS-422 Railgun  •  FAF-14 Spear  •  GL-21 Grenade Launcher  •  LAS-98 Laser Cannon  •  ARC-3 Arc Thrower  •  LAS-99 Quasar Cannon  •  SG-88 Break-Action Shotgun  •  MLS-4X Commando  •  TX-41 Sterilizer  •  StA-X3 W.A.S.P. Launcher  •  Entrenchment Tool  •  CQC-1 One True Flag  •  GL-52 De-Escalator

Throwables

G-6 Frag  •  G-12 High Explosive  •  G-16 Impact  •  G-23 Stun  •  G-3 Smoke  •  G-10 Incendiary  •  G-123 Thermite  •  G-13 Incendiary Impact  •  K-2 Throwing Knife  •  G-4 Gas  •  G-50 Seeker  •  TED-63 Dynamite  •  G-142 Pyrotech  •  G-109 Urchin

Attachments

2x Tube Red Dot  •  Reflex Sight  •  Holographic Sight  •  4x Combat Scope  •  10x Sniper Scope  •  No Underbarrel  •  Laser Sight W/ Flashlight  •  Vertical Foregrip  •  Angled Foregrip  •  Flashlight Vertical Foregrip  •  Laser Sight Angled Foregrip  •  No Attachment  •  Muzzle Brake  •  Flash Hider  •  Compensator  •  Iron Sight  •  1.5x Tube Red Dot  •  No Choke  •  Reflex Sight Mk2  •  Full Choke  •  Half Choke  •  Extended Magazine  •  High Dissipation Heatsink  •  Duckbill  •  Standard Heatsink  •  High Capacity Heatsink  •  Drum Magazine  •  Short Magazine