Mace but 3D
Important Notice: This mod will not be updated beyond version 1.21.3 as this functionality can now be implemented using resource packs.
For Minecraft versions 1.21.3 and above, we recommend using the Mace but 3D Resource Pack.
Many players, including myself, were disappointed to learn that the mace in version 1.21 wouldn't feature a three-dimensional model. This mod addresses that issue.
Mace but 3D is a Fabric mod that adds a clean 3D model to the mace. Unlike resource packs, the custom model appears only when you're holding the weapon, providing a more authentic vanilla experience.

However, when placed in item frames, the mace retains its standard model, similar to the trident and spyglass.

The mod is client-side and should work perfectly on any server. You're free to include it in your modpacks.