How would I modify this code to work with a cylinder? [closed]

I have basically taken the roblox on tutorial on how to make a ray gun

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

tool.Equipped:connect(function(mouse)
    print("Tool equipped!")

    mouse.Button1Down:connect(function()
        print("Mouse pressed!")
        local ray = Ray.new(tool.Handle.CFrame.p, (mouse.Hit.p - tool.Handle.CFrame.p).unit * 300)
        local part, position = workspace:FindPartOnRay(ray, player.Character, false, true)

        local beam = Instance.new("Part", workspace)
        beam.BrickColor = BrickColor.new("Bright red")
        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, 0.1)

        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(30)
            end
        end
    end)
end)

and modified it to work on filtering enabled but I'm having issues making the ray a cylinder instead of a block, it seems to fire sideways instead of forwards as I am trying to make it do. Would anyone have any solutions to this? Here's my modified code:

local tool = script.Parent

script.Parent.RemoteEvent.OnServerEvent:Connect(function(player, mousehit)
        local ray = Ray.new(tool.Handle.CFrame.p, ( tool.Handle.CFrame.p-mousehit.p).unit * 300)
        local part, position = workspace:FindPartOnRay(ray, player.Character, false, true)

        local beam = Instance.new("Part", workspace)
        beam.BrickColor = BrickColor.new("Toothpaste")
        beam.FormFactor = "Custom"
        beam.Material = "Neon"
        beam.Transparency = 0.25
        beam.Anchored = true
        beam.Locked = true
        beam.CanCollide = false
    beam.Shape = "Cylinder"
        local distance = (tool.Handle.CFrame.p - position).magnitude
        beam.Size = Vector3.new(distance, 5, 5)
        beam.CFrame = CFrame.new( tool.Handle.CFrame.p,position) * CFrame.new(-distance / 2, 0, 0)
------      beam.Rotation =  Vector3.new(90,0,90) --ive tried these but they dont work
--      beam.Orientation = beam.Orientation + Vector3.new(0,90,0)
        game:GetService("Debris"):AddItem(beam, 290)

        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(30)
            end
        end
    end)