How to add spread to raycasting

I’m making a gun for my game but I need to add spread, can you tell me how?

The direction parameter of the raycast should be something like this:

local dist = (mouseHitPos - startPos).Magnitude
local RayDirection = ((mouseHitPos + * dist/20, Spread * dist/20, Spread * dist/20)) - startPos).unit * Range

This is my method of raycasting with spread ^^
Lmk if there are any issues regarding my idea or code

where is the value “spread” defined?

just put it in a variable somewhere above.

Just define it by yourselves, I didn’t define spread just to give you a little idea on how to implement spread, not to write an entire script.