Image Credit: Bethesda
Forgot password
Enter the email address you used when you joined and we'll send you instructions to reset your password.
If you used Apple or Google to create your account, this process will create a password for your existing account.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Reset password instructions sent. If you have an account with us, you will receive an email within a few minutes.
Something went wrong. Try again or contact support if the problem persists.
Grenade Launcher AK EFT
Screenshot by Prima Games

How to Use the Underbarrel Grenade Launcher in Escape From Tarkov

The noob tube in Tarkov.

While under-barrel grenade launchers are rare and limited in Escape from Tarkov, you also need the correct weapon attachments to equip them. Apart from those requirements, you also need some ammo, which is also rare. In this comprehensive guide, we’ll teach you how to use the under-barrel grenade launcher by showing you the correct weapon preset and what ammo to use in Escape from Tarkov.

Recommended Videos

How to Fire an Underbarrel Grenade Launcher in Escape from Tarkov

When you find a weapon with an underbarrel grenade launcher, you won’t be able to use it if you don’t have the right ammo. It goes for every single gun in the game. Equip the weapon with the under-barrel grenade launcher. If the weapon slot is on 2 or 3, you have to press the weapon slot again to switch to the weapon’s under-barrel grenade launcher. For example, if your M4A1 with the grenade launcher is set to 2, you have to pull out the M4A1 by pressing 2 and pressing 2 again to switch to the grenade launcher.

Once the grenade launcher is equipped, you must load it with 40x46mm grenades. Here’s the list of grenades you can use:

  • 40x46mm M381 (HE) grenade (short range)
  • 40x46mm M386 (HE) grenade (long range)
  • 40x46mm M406 (HE) grenade (long range)
  • 40x46mm M433 (HEDP) grenade (long range)
  • 40x46mm M441 (HE) grenade (short range)
  • 40x46mm M576 (MP-APERS) grenade (shotgun or bullet grains)

If you have any of these in your rig or pockets, reloading the grenade launcher will put one of these inside. Remember, before the rig, it’ll always burn through grenades in your pockets first. So, if you want some short-range grenades as your default, put them in your pockets so you don’t have to open the inventory every time to make swaps. Once you have reloaded the under-barrel grenade launcher, just point and shoot.

Now, you might be asking how to get the weapon with the under-barrel grenade launcher in the first place. Most players will only find the under-barrel grenade launcher attachments but may have no idea how to use them.

How to Mod an Underbarrel Grenade Launcher to Your Weapon in Escape from Tarkov

There are two under-barrel grenade launchers in the game: the GP-25 Kostyor 40mm under-barrel grenade launcher and the M203 40mm under-barrel grenade launcher.

The GP-25 Kostyor 40mm under-barrel grenade launcher is for AK-based weapons like AKMs, AK-74s, or the AK 100 series. The M203 40mm under-barrel grenade launcher is for AR-15 weapons like M4A1s, HKS, and TX-15s.

To place the M203 40mm under-barrel grenade launcher on an AR-15, it must have any of the following preset or handguard to attach to:

  • AR-15 KAC RIS handguard
  • AR-15 KAC URX 3 8-inch handguard
  • AR-15 Daniel Defense RIS II 9.5 handguard
  • AR-15 Colt M4 Carbine length handguard
  • AR-15 Daniel Defense RIS II 12.25 handguard
  • AR-15 KAC “URX 3.1” 10.75-inch handguard
  • AR-15 Strike Industries Viper carbine length M-LOK handguard

The GP-25 Kostyor 40mm under-barrel grenade launcher needs the correct AK with any of the following handguards:

  • AK 100-series polymer handguard
  • AK-74 wooden handguard
  • AK-74 polymer handguard
  • AKM wooden handguard
  • AK Strike Industries TRAX 1 handguard
  • AK TDI AKM-L handguard
  • AK Zenit B-10 Handguard
  • AK Zenit B-10M handguard with B-19 upper mount
  • AK CNC Guns OV GP handguard
  • VPO-136 Vepr-KM wooden handguard
  • VPO-209 wooden handguard

Once you have modded the weapon, you can follow the guide mentioned before on how to fire it.

Running weapons with under-barrel grenade launchers is very expensive. You’ll need a method to lower the costs by looking for cheap 40x46mm grenades, or you can just farm money faster and buy them from the flea market. You might have a great chance of looting some of these attachments and weapons when opening Shatun’s hideout or any one of Ref’s awesome keys tied to Tarkov Arena.


Prima Games is supported by our audience. When you purchase through links on our site, we may earn a small affiliate commission. Learn more about our Affiliate Policy
Author
Image of Enzo Zalamea
Enzo Zalamea
Enzo is a staff writer at Prima Games. He began writing news, guides, and listicles related to games back in 2019. In 2024, he started writing at Prima Games covering the best new games and updates regardless of the genre. You can find him playing the latest World of Warcraft expansion, Path of Exile, Teamfight Tactics, and popular competitive shooters like Valorant, Apex Legends, and CS2. Enzo received his Bachelor's degree in Marketing Management in De La Salle University and multiple SEO certifications from the University of California, Davis.