If you are looking for high-quality weapon additions for a 1.6.4 server, here are the most compatible options: 1. CrackShot (Plugin)

: It runs entirely on the server side, which is what Paper is designed for. 2. Balkon's WeaponMod (Forge Mod)

: Custom firearms, explosives, and grenades using standard Minecraft items (like hoes or sticks) transformed into weapons.

: Ensure you are using Cauldron 1.6.4 . Place the mod in the /mods folder and make sure all players have the same mod installed in their local Minecraft folder.

: Requires the Forge API to be installed on both the server and the player's game. 3. Ferullo’s Guns Mod