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TaCZ Pack Upgrader

by MUKSC

TaCZ Pack Upgrader converts TaCZ gun packs so they load on NeoForge 1.21.1 without manual editing.

NeoForgeClient or server, optionalGNU Lesser General Public License v3.0 or laterOpen source1.21.1

What it does

Once the upgrader is installed in the mods folder and the game is launched, gun packs placed in the tacz folder are converted and loaded automatically. The conversion covers .jar gun packs, and the upgrade runs on each launch when new packs are added.

The mod handles gun packs only. It does not upgrade .jar mod addons, because those cannot be converted programmatically, so addons such as TaCZ Tweaks or TaCZ Durability still need their own 1.21.1 builds. Some gun packs depend on specific addons, for example LesRaisins Tactical Equipments, and those addons must be present for such packs to work.

The upgrader is published for NeoForge only, for the single game version 1.21.1. Either side can run it and neither needs it, so it can be used on a client alone, a server alone or both. The code is open source under the GNU Lesser General Public License v3.0 or later, and public source and an issue tracker are available.

Key features

  1. Automatic pack upgrade

    Gun packs in the tacz folder are converted during game launch, without any manual file editing.

  2. Gun pack support

    Packs in .jar form are handled, including packs that ship with their own attachments and models.

  3. Addon dependency awareness

    Gun packs that rely on mod addons are loaded only when those addons are present in the game.

  4. Source and issue tracking

    The source code and issue tracker are publicly available for reports and inspection.

Compatibility

Latest build for each game version and loader.

1.21.12.1.3
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Required by 2 mods

TacZ Mesh Loader [TML]1.20.1 – 1.21.1[TaCZ] Runtime Compat1.21.1

Questions

Which game versions does the upgrader support?

Only 1.21.1. The latest NeoForge file is 2.1.3 for 1.21.1, released on 2026-07-07.

Will mod addons be upgraded automatically?

No. The upgrader converts gun packs only. Addons must be replaced with 1.21.1 builds, because they cannot be converted programmatically.

More from MUKSC

All projects
TaCZ Tweaks1.20 – 1.21.1[UNOFFICIAL] TaCZ 1.21.1 NeoForge Port1.21.1

What the author says

The upgrader can handle gun packs, but not mod addons; it's impossible to upgrade mods from 1.20.1 to 1.21.1 programatically You need to put the.jar gun packs into the tacz folder, not the mods folder After that, everything should be handled automatically
MUKSC, on the Modrinth page

Official listing

Owner
MUKSC
Published
2025-09-25
Updated on Modrinth
2026-07-07
Facts verified
2026-10-15
Open on ModrinthCompare