A sword:Excalibur.
Model from:https://www.aplaybox.com/details/model/BVKYQjpt6W3y

install:
Use openiv to search for file names and replace them.
Generate weapons in the game, press 2 to switch between melee axe weapons.

My mod site:
https://afdian.com/a/ncncgta5mod
https://discord.gg/B3YgeTpA
https://www.gta5-mods.com/users/NcNc

Thanks.