bubble bow, bubble burster, twisting vine bow, weeping vine bow, mechanized sawblade, void bow, call of the void, phantom bow, web bow, pride of the piglins, cog crossbow, spell bound crossbows, shadow crossbow, veiled crossbow, and a lot more!

this is not a bug, the mod is not feature complete so all the items are not implemented yet

Which version of the mod is this? Many of them were definitely added in builds made for newer Minecraft versions.

1.16.5, because of an older mod i used to play with

if you want to try out that mod, go to this page to download it. https://legacy.curseforge.com/minecraft/mc-mods/timeless-and-classic-guns-tac

1.19.2 version of minecraft has a horrible bug, so can you port it to 1.20.1?

1.16.5, because of an older mod i used to play with

Okay, well unfortunately, I no longer work on older versions of any of my mods as a policy (I do accept PRs made by others, for backports). The newer content added in newer versions will not be added to 1.16.5 anytime by me.

already transitioned not that long ago, to 1.20.1