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This article could contain outdated information that is inaccurate for the current version (0.49) of the game. It was last updated for 0.48.

A rifle attachment that fires grenades with pneumatic force. Along with specialized grenades, it can launch standard grenades.
In-game description

A warden Grenade Launcher


The Ospreay is a Grenade Launcher that's an attachment for Rifles, Heavy Rifles and Long Rifles. It can launch Tremola Grenade GPb-1, Green Ash Grenade and A3 Harpa Fragmentation. It fits on all rifles except those with select fire functionality. Only one grenade can be loaded in the launcher at a time, which means you'll need to reload after each shot. The grenades cannot be cooked, unlike when thrown by hand, and will detonate 4s after being launched.


  1. Have a rifle and your Ospreay both equipped and a suitable grenade in your inventory.
  2. Take your rifle out and attach the grenade launcher to it by pressing F.
  3. (Optional)If you have more than one type of grenade in your inventory press F to cycle through them.
  4. Press R (reload) to put a grenade on the grenade launcher.
  5. Press RMB to aim and LMB to shoot it.

Be aware that switching weapon or unequipping the rifle will automatically remove the Ospreay from the rifle.

Ammunition Types[]

The Ospreay cannot launch Smoke Grenades or the colonial Bomastone Grenade.

Historical Reference[]