How do I make a weapon similar to this? (GIF in post)

Can you explain how you got it? That would be useful

Oh, I thought you meant you figured out how to make it bounce

auto add enchantment "channeling" and when it touches wall place another arrow(don't use ranged item bullet;new entity please,and procedure to "launch it with bow"),it a different direction and velocity

i figured out a way to make bullets shoot through

What is it?

I can think a way to make it bounce, but it would only work for custom blocks I guess

just a little bit of commands

Ok, bouncing projectiles is not that hard, just create an entity that will act like the projetile, set its movement to where you are looking, and when its x or y or z movement is 0 (when a wall blocks its path) invert x or y or z movement by multiplying speed by -1

yes

Have you found a way too make projectiles bounce?

msrodrigues2000 uh how do i do that