3ds max weapon converting

[_keegan_]

Hello, im trying to convert some weapons to GTA 5 but i don't know how to create animated weapon parts, lens/reticle in scope or how to apply normal maps to the weapon, actually im using 3ds max 2020 and assets from Escape from Tarkov.
I found a tutorial on how to create a melee weapon, but it doesn't help so i ask here.