Kay I don't know why SWEP.Spawnable was to false, I was probably tired. It's fixed, and now the weapon is back in the category.

Sawblades now clean up automatically.

Improved the sound effect, nerfed the wait time for primary attack from 0.35 to 0.28, and secondary from 1 to 0.5.
I tried to make the player shoots 3 sawblades at a time, but I couldn't. The code is still in the lua file, at the very end.
Feel free to help ^^