M203 Underbarrel Grenade Launcher-Carbine

⭐ ⭐ (136 endorsements) 📥 7,420 downloads 📌 vFinal 📅 1/23/2009
⚪ Last updated 2010

By Various · Weapons

⬇ Download Mod Source: Nexus Mods ↗ 📅 Updated: 4/5/2010 📅 Created: 1/23/2009
⚠️ Install Order · 2 steps
1🛠️ FOSE — Fallout Script Extender Download ↗
2🔧 UFO3P — Unofficial Fallout 3 Patch Download ↗

Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.

🔍 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.

🤖 AI-enhanced — based on mod data

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

Adds an assault rifle with an integrated grenade launcher.
Grenade launcher is functional, allowing explosive shots.
Weapon category: Weapons.

📊 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.
🎯 Is This For You?
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.
📦 Install:Easy· Under 1 minute

💡 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.

🎮 Need cheat codes or console commands? Check ur gaming wiki for Fallout 3 commands, item IDs, and more.

Keep browsing — more Fallout 3 mods await

📋 All Fallout 3 Mods 🏆 Top 25 📂 More Weapons 👤 More by Various 🔎 Similar Mods 🌐 Best Weapons (All Games) 💾 Save Files 🔀 Check Compatibility ⚖️ Compare Mods 🆕 New Mods