Laser Script For Firing a laser Help?

So i have 2 Questions 1. How do i make my Cylinder go wherever i point? Aka Laser 2. My Laser is Firing! but not from in front of me! help please!

My script:

Player = script.Parent.Parent
mouse = Player:GetMouse()

function onKeyDown(key)
Key = key:lower()
if key == "z" then
x = Instance.new("Part")
x.BrickColor = BrickColor.new("Really red")
x.Size = Vector3.new(5, 5, 5)
x.TopSurface = "Smooth"
x.BottomSurface = "Smooth"
x.Shape = "Cylinder"
x.Transparency = 0.7
y = Instance.new("BodyVelocity")
y.maxForce = Vector3.new(math.huge, math.huge, math.huge)
y.velocity = Player.Character.Torso.CFrame.lookVector*80
x.Parent = Workspace
y.Parent = x
f = Instance.new("Sparkles", x)
f.Size = 7
f.Heat = 0
x.CFrame = Player.Character.Torso.CFrame *CFrame.new(0, 0, -12)
game.Debris:AddItem(x, 6)
end
end


mouse.KeyDown:connect(onKeyDown)