Problem with tool movement

Hi! I’m making a fire tool that work with the hold-to-shot mechanic.

I did a Hitboxes where the players get killed, i show you how it looks.
robloxapp-20210216-2309399.wmv (3.0 MB)

With hitboxes, my movement is weird, and when i delete it, it becomes normal.
I don’t know how to solve this problem so i hope you can help me!

BasePart.Massless (roblox.com)

1 Like

Wow, I never knew about that property - this helped a lot, thanks