How Do I Control Accuracy on Gun? [FE]

Currently, my gun is scripted like this, and works fine.

-- SERVER SCRIPT

local RepStorage = game:GetService("ReplicatedStorage")

RepStorage.laser.OnServerEvent:connect(function(player,tool,ray,part,position,Damage,Color)	
	local beam = Instance.new("Part", workspace)
	beam.Color = Color
	beam.FormFactor = "Custom"
	beam.Material = "Neon"
	beam.Transparency = 0.25
	beam.Anchored = true
	beam.Locked = true
	beam.CanCollide = false
	
	local distance = (tool.Handle.CFrame.p - position).magnitude
	beam.Size = Vector3.new(0.3, 0.3, distance)
	beam.CFrame = CFrame.new(tool.Handle.CFrame.p, position) * CFrame.new(0, 0, -distance / 2)
	
	game:GetService("Debris"):AddItem(beam, 0.05)
 
	if part then
		local humanoid = part.Parent:FindFirstChild("Humanoid")

		if not humanoid then
			humanoid = part.Parent.Parent:FindFirstChild("Humanoid")
		end

		if humanoid then
			humanoid:TakeDamage(Damage)
		end
	end
end)

-- LOCAL SCRIPT

--//:Services:
local RepStorage = game:GetService("ReplicatedStorage")
local InputService = game:GetService("UserInputService")

--//:Variables:
local tool = script.Parent
local player = game:GetService("Players").LocalPlayer

--//:GunConfig:
local GunConfig = tool.GunConfig
local Ammo = GunConfig.Ammo.Value
local Clips = GunConfig.Clips.Value
local CoolDown = GunConfig.CoolDown.Value
local Damage = GunConfig.Damage.Value
local MaxAmmo = GunConfig.MaxAmmo.Value
local Range = GunConfig.Range.Value
local Color = GunConfig.LaserColor.Value
local ReloadTime = GunConfig.ReloadTime.Value
local KeyCodes = {Enum.KeyCode.R}

--//:Debounces:
local CanFire = GunConfig.CanFire.Value
local Reloading = false
local Firing = false
 
--//:Main:
local Update = function(bool)	--Update AmmoUI
	if bool == true then
		player.PlayerGui.AmmoUI.Frame.CurrentAmmo.Text = (Ammo.."/"..MaxAmmo)
	elseif bool == false then
		player.PlayerGui.AmmoUI.Frame.CurrentAmmo.Text = " "
	end
end

local Reload = function()		--Reload (duh)
	if Reloading == false then
		Reloading = true
		CanFire = false
		Ammo = 0
		Update(true)
		wait(ReloadTime)
		Ammo = MaxAmmo
		Update(true)
		Reloading = false
	end
end

tool.Equipped:connect(function(mouse)		--Equipped
	Update(true)
	InputService.InputBegan:connect(function(input,chatting)
		if input.KeyCode == KeyCodes[1] and not chatting then
			Reload()
		end
	end)
	mouse.Button1Down:connect(function()		--FIRE!!!!!! (Semi)
		if CanFire == true and Ammo > 0 and player.Character.Humanoid.Health > 0 then
			CanFire = false
			Firing = true
			local ray = Ray.new(tool.Handle.CFrame.p, (mouse.Hit.p - tool.Handle.CFrame.p).unit * Range)
			local part, position = workspace:FindPartOnRay(ray, player.Character, false, true)
			RepStorage.laser:FireServer(tool,ray,part,position,Damage,Color)
			Ammo = Ammo - 1
			Update(true)
			wait(CoolDown)
			CanFire = true
			Firing = false
		elseif CanFire == true and Ammo == 0 and player.Character.Humanoid.Health > 0 then		--Reloads if ammo is 0 and idiot tries to fire gun
			Reload()
		end
	end)
end)

tool.Unequipped:connect(function()		--Sets AmmoUI's text to blank when tool is unequipped
	Update(false)
end)

Problem is, that it has perfect accuracy. I want to make it so it has spread, so if you shoot someone at point blank, you have a 100% chance of hitting them, and as the distance between you and the person increases, the accuracy decreases. Also, this is filtering enabled.

Also, I want the accuracy to have a variable that will control how accurate it is.

Use math.random. Say, per 10 studs, the math.random() had an extra range. So for every 10 studs, increase x in: math.random(0, x). If you wanted the max distance for the bullet to be to the torso or another part to be 5 studs, you could do math.random(0, x * 2), where x has a max of 5. * 2 because its not just 2 directions which the bullet could go in. It could go North, East, South, or West from your target. NOTE: You would need math.random() twice, one per Opposite direction. Then apply the cframe etc, I don't know that kind of stuff, but you could probably understand. That would provide accuracy based on distance. If you wanted the accuracy to be set at a certain spot along the circumfrence of the range, then you could just do math.random() to fire along certain intervals. NOTE: getting 5 from math.random() would be the center.

EDIT: A variable to control accuracy could be to lower the range of math.random().