M203 Underbarrel Grenade Launcher-Carbine
⚪ Last updated 2010⚠️ Install Order · 2 steps
Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.
Preview

🔍 Analysis
- 👍 1.8% endorsement rate — high engagement, a strong quality signal
- 🏆 #220 of 313 Weapons mods in this game by downloads
📋 About This Mod
5th O\' April: Lined up the ironsights to for Roguehollow\'s animations. I now pronounce you version 2 Final! I\'m quitting the fallout scene anyhow. Grab the new mesh and replace the old \'USMAG\' under 2handautomatic in \'weapons\'. 26/01: Uploaded a beta of the new model, this time the M203 slides onto a Heckler and Koch 416 by Anti-Death, Soul-Slayer, Stoke, TheLama and Twinke Masta (http://www.fpsbanana.com/skins/33939) This is unsilenced for you lot asking for it. I\'m very happy with it but it\'s still a beta because I have to find out how to allign the ironsight with the crosshair. Yes, this was made with RH_Iron Sights in mind, it will work without it, but the animations have been set up for it and I highly recommend it. As always check for missing files please. 16/01: Check the screenies if you\'re wondering why this updated. Minor update: The pc now holds her/his gun at different positions depending on which trigger you wish to pull. Thanks to Cheeze405 for the tip. Update: Major bugfix, download the latest esp, too. Adds the M203 to the top of a shelf in the Reilly\'s rangers\' compound. You may also steal some grenade rounds from the box next to the shelf. Originally intended to replace the eugene since that was a rubbish reward but since Reiley explicitly calls it Eugene instead of something like \'her gun\' which I had hoped for, I\'d have to call it \'The Eugene\', which I\'d rather not. Christ what is it with rednecks naming their guns. Carbine by tyokio(tyokio@hotmail.co.uk) grenade rounds and script by 1337martyr here on the nexus. I have their permission and blessings. Currently the reload animation is perfect in 3rd person but so-so in 1st.
Adds an assault rifle with a functional integrated M203 grenade launcher to Fallout 3. A compact weapon mod with 136 endorsements and 7,420 downloads, last updated in April 2010. For players wanting explosive firepower in a single rifle.
✨ Key Features
📊 Pros & Cons
✅ Pros
- Functional grenade launcher adds tactical flexibility.
- Decent community support with 136 endorsements.
- Lightweight mod that doesn't overhaul the game.
⚠️ Cons
- Last updated in 2010 — may be incompatible with current game versions or mods.
- Limited to a single weapon; no additional features or variations.
For Fallout 3 players who want a versatile rifle with explosive capability without installing a large weapon pack. Skip if you're looking for modern, actively maintained mods or extensive weapon customization.
💡 Beginner Tips
- Since this mod is from 2010, check if you're using the latest Fallout 3 patch and consider using a mod manager to avoid conflicts.
- Test the grenade launcher in a safe area first to understand its splash damage and avoid blowing yourself up.
- If you're using other weapon mods, load order might matter — place this mod after major overhauls to ensure compatibility.
📊 Mod Details
- Game
- Fallout 3 Mods
- Author
- Various
- Version
- Final
- Downloads
- 7,420
- Endorsements
- 136
- Category
- Weapons
- Created
- 1/23/2009
- Updated
- 4/5/2010
🔧 How to Install Fallout 3 Mods
Download from Nexus.
📖 Full step-by-step install guide for Fallout 3 →
Visit the official mod page for specific installation instructions for this mod.
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