XM29OICW

v1.0.2·Updated 2026-06-14

A gun and a grenade launcher walked into a bar...

About this mod Author’s original text

XM-29 OICW

The XM29 OICW was an experimental US infantry weapon developed by H&K during the 90s' future warrior program phase. By having two separate weapon system into one, namely the 5.56mm Assault Rifle component and some really high tech 20mm grenade launcher with programmable fuse time to defeat units behind cover, the system was deemed overly complicated, costly and at the end of the development, everyone started to ask the real questions, is it truly needed?

The weapons itself didn't go further despite having a handful of different iterations. In the end though, the assault rifle part was split into the XM-8 and the grenade launcher was split into the XM-25 in the end.

The weapon itself has hidden rails and the ability to snap on muzzle devices. The complicated ballistic-ish computer scope system is mostly functional, with the ability to range find, magnification, night vision and thermals. The scope can "swapped" away by just placing any picatinny style attachments on it.

In order to use the OICW, your main hand controls the fire selectors for both weapons, the assault rifle and the grenade launcher (With KE means kinetic, basically rifle and HE means grenade launcher)

To use the programmable fuse, your off-hand has to hold the fore. By pressing trigger, you'll hear a beep and the range finder will indicate its range to indicate how far it'll explode. (THANK YOU JERRY FOR THE SCRIPT!!!!!)

Features

  • The future looks bright with the 2-in-1 weapons package!
  • Takes STANAG mags and its own proprietary 29x85mm Mags (Also included a cursed 40mm version)
  • To operate the grenade launcher component, just switch fire selectors to GL mode and fire away!
  • Has hidden picatinny rails and takes muzzle devices
  • Can be found in Firearms > Assault Rifle

"H&K XM39 OICW" ( by kino is licensed under Creative Commons Attribution (

Thank you to everyone for the support and push! Namely: Riceler, Tweedy, a1337Spy, IRIAF and Bluestar (I AM SORRY IF I FORGOT YOUR NAMES HERE)

Install & use Install: BepInEx plugin

  1. The archive from playbuff is the mod itself — usually a BepInEx plugin (a .dll or a plugin folder once unzipped).
  2. Recommended: use a community mod manager (such as r2modman) — pick this game, import the mod, and the manager sets up BepInEx and its dependencies for you.
  3. Manual route: install the BepInEx loader in the game folder, then drop the unzipped .dll or plugin folder into BepInEx/plugins/.
  4. Launch the game — the BepInEx console logs every plugin it loads; seeing this mod in the log means it is installed.

Mods with listed dependencies need those installed too, or they will not load. Options are usually changed in-game or in the plugin's config file.

Dependencies

Install these first, or the mod will not work:

devyndamonster-OtherLoadercityrobo-OpenScripts2Okkim-Bag_Of_ScriptsVolks-20x85mm_Ammo

File & checksum

Filename
XM29OICW-1.0.2.zip
File size
39.8 MiB