GL-21 Grenade Launcher

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A grenade launcher effective against armored infantry. Not intended for use against vehicle armour or fortified buildings.

— Ship Management Terminal

The GL-21 Grenade Launcher is a support weapon able to effectively clear small and medium sized enemies due to the large AoE of the grenades. A well rounded weapon, capable of firing full-auto if needed.

Stratagem Statistics

  • Call-in Time: 3 Seconds
  • Uses: Unlimited
  • Cooldown: 480 Seconds

Detailed Weapon Statistics

GL-21 Grenade Launcher
Cooldown 480 sec
Call-in Time 3 s
Capacity 10
Reload Time 3.5 s
Tactical Reload 3 s
Spare Magazines 2
Starting Magazines 1
Mags from Supply 2
Mags from Ammo Box 1
Grenade 40mm HE Projectile
Grenade 40mm HE Explosion
Grenade 40mm HE
Caliber 40 mm
Mass 50 g
Initial Velocity 100 m/s
Drag Factor 120%
Gravity Factor 100%
Penetration Slowdown 25%
Standard 20
vs. Durable 2
Direct Armor AP0 Icon.png Unarmored
Slight Angle Armor AP0 Icon.png Unarmored
Large Angle Armor AP0 Icon.png Unarmored
Extreme Angle Armor AP0 Icon.png Unarmored
Special Effects
Demolition Force 10
Stagger Force 40
Push Force 10
Grenade 40mm HE
Area of Effect
Inner Radius 2.5 m
Outer Radius 6.5 m
Shockwave Radius 7 m
Inner Radius 400
Outer Radius 399 - 0
Inner Radius Armor AP3 Icon.png Medium I
Outer Radius Armor AP2 Icon.png Light II
Shockwave Armor AP3 Icon.png Medium I
AoE Effect
Demolition Force 30
Stagger Force 25
Push Force 30

Affected By

The following Ship Modules affect the GL-21 Grenade Launcher

Department Ship Module Effect
Patriotic Administration Center Donation Access Licence GL-21 Grenade Launcher is always called in with max reserve magazines, instead of just 1.
Streamlined Request Process Cooldown reduced by 10%, from 480 Seconds (8 Minutes) to 432 Seconds (7 Minutes 12 Seconds).

Tactical Information

  • The Grenade Launcher's grenades have a short arming period before becoming active, causing the grenade to harmlessly bounce off objects for a short time after firing if it hits an enemy/object within the munition's arming distance before exploding.
  • It excels at destroying Bug Holes, and is also capable of destroying Bot Fabricators when the grenade explodes in the lowest section inside the vents.
  • The grenades perform well at dispatching hordes of smaller enemies.
  • The Grenade Launcher performs well at dispatching various medium-sized Terminids.
    • Nursing Spewers and Bile Spewers will die to 2-3 grenades to the acid sac.
    • Hive Guards will die to 2 grenades, and will be heavily staggered on impact.
    • Brood Commanders will die to 3 grenades, and also will not enter their Berserk state, as their head does not get removed.
  • This support weapon pairs well with a Supply Pack, as the pack makes up for launcher's low reserve ammunition.
  • It also pairs well with the Jump Pack, as it allows you to fire grenades from the high ground much easier.
  • The Grenade Launcher is largely ineffective against heavier enemies such as Hulks and Chargers except when striking their weak points in their rears.
  • Bile Titans can be killed by shooting an area on its body stripped by Anti-Tank stratagems like the GR-8 Recoilless Rifle, Eagle 110mm Rocket Pods, or Orbital Railcannon is able to very quickly cripple it by destroying the bile sacks on its stomach and tail, making it unable to spew bile.


Tutorial Video Demonstrating Use of the GL-21 Grenade Launcher

Change History




  • Increased explosion damage by from 350 to 400.

Undocumented Changes

  • Explosion Push Force reduced from 40 to 30.



  • Explosive weapons no longer pull players inward from the blast.