Why will my LocalScript work in Studio but not actual roblox?

This is a script that basically just makes some instances and adds velocity to them however it does not work in the actual Roblox game. Pressing X does nothing however in Studio it works fine. I have seen somewhere that I can only use LocalPlayer in my script so I tried to remove most variables referencing LocalPlayer. Here is the code.

Animation = game.StarterPack.LocalScript.Animation
local torso = game.Players.LocalPlayer.Character.Torso
local player = game.Players.LocalPlayer
local mouse = player:GetMouse()
local plyr = script.Parent.Parent




function gunsummon(key)
	if key == "x" then
		print("gun1")
		local animTrack = game.Players.LocalPlayer.Character.Humanoid:LoadAnimation(Animation)
		animTrack:Play()
		wait(1)
		x1 = Instance.new("Part", game.Players.LocalPlayer.Character.Torso)
		x1.Name = "Gun1"
		x2 = Instance.new("Part", game.Players.LocalPlayer.Character.Torso)
		x2.Name = "Gun2"
		x3 = Instance.new("Part", game.Players.LocalPlayer.Character.Torso)
		x3.Name = "Gun3"
		x4 = Instance.new("Part", game.Players.LocalPlayer.Character.Torso)
		x4.Name = "Gun4"
		y1 = Instance.new("SpecialMesh", x1)
		y1.MeshId = "rbxassetid://3835506"
		y2 = Instance.new("SpecialMesh", x2)
		y2.MeshId = "rbxassetid://3835506"
		y3 = Instance.new("SpecialMesh", x3)
		y3.MeshId = "rbxassetid://3835506"
		y4 = Instance.new("SpecialMesh",  x4)
		y4.MeshId = "rbxassetid://3835506"
		x1.BrickColor = BrickColor.new("New Yeller")
		x2.BrickColor = BrickColor.new("New Yeller")
		x3.BrickColor = BrickColor.new("New Yeller")
		x4.BrickColor = BrickColor.new("New Yeller")
		x1.Anchored = true
		x1.CFrame = CFrame.new(game.Players.LocalPlayer.Character.Torso.Position.X,game.Players.LocalPlayer.Character.Torso.Position.Y,game.Players.LocalPlayer.Character.Torso.Position.Z) * CFrame.Angles(0,220,0)
		x1.CanCollide = false
		x2.Anchored = true
		x2.CanCollide = false
		x2.CFrame = CFrame.new(game.Players.LocalPlayer.Character.Torso.Position.X,game.Players.LocalPlayer.Character.Torso.Position.Y,game.Players.LocalPlayer.Character.Torso.Position.Z) *  CFrame.Angles(0,-80,0)
		x3.Anchored = true
		x3.CanCollide = false
		x3.CFrame = CFrame.new(game.Players.LocalPlayer.Character.Torso.Position.X,game.Players.LocalPlayer.Character.Torso.Position.Y,game.Players.LocalPlayer.Character.Torso.Position.Z) *  CFrame.Angles(0,80,0)
		x4.Anchored = true
		x4.CanCollide = false
		x4.CFrame = CFrame.new(game.Players.LocalPlayer.Character.Torso.Position.X,game.Players.LocalPlayer.Character.Torso.Position.Y,game.Players.LocalPlayer.Character.Torso.Position.Z) *  CFrame.Angles(0,110,-0)
		local gunpositioncalc1 = game.Players.LocalPlayer.Character.Torso.Gun1.Position.Z - 10
		x1.Position = Vector3.new(game.Players.LocalPlayer.Character.Torso.Position.X,game.Players.LocalPlayer.Character.Torso.Position.Y,gunpositioncalc1)
		local gunpositioncalc2 = game.Players.LocalPlayer.Character.Torso.Gun2.Position.X - 10
		x2.Position = Vector3.new(gunpositioncalc2,game.Players.LocalPlayer.Character.Torso.Position.Y,game.Players.LocalPlayer.Character.Torso.Position.Z)
		local gunpositioncalc3 = game.Players.LocalPlayer.Character.Torso.Gun3.Position.X - -10
		x3.Position = Vector3.new(gunpositioncalc3,game.Players.LocalPlayer.Character.Torso.Position.Y,game.Players.LocalPlayer.Character.Torso.Position.Z)
		local gunpositioncalc4 = game.Players.LocalPlayer.Character.Torso.Gun3.Position.Z - -10
		x4.Position = Vector3.new(game.Players.LocalPlayer.Character.Torso.Position.X,game.Players.LocalPlayer.Character.Torso.Position.Y,gunpositioncalc4)
		wait(0.5)
		----------------------------------------------------------------------Bullet 1
		b1 = Instance.new("Part",x1)
		b1.Name = "Bullet1"
		b1.Shape = "Ball"
		b1.TopSurface = "Smooth"
		b1.BrickColor = BrickColor.new("Black")		
		b1.BottomSurface = "Smooth"
		b1.Size = Vector3.new(1,1,1)
		y = Instance.new("BodyVelocity", b1)
  		y.maxForce = Vector3.new(math.huge, math.huge, math.huge)
  		y.velocity = Vector3.new(0,0,-120)
		b1.Position = x1.Position
		----------------------------------------------------------------------Bullet 2
		b2 = Instance.new("Part",x4)
		b2.Name = "Bullet2"
		b2.Shape = "Ball"
		b2.TopSurface = "Smooth"
		b2.BrickColor = BrickColor.new("Black")		
		b2.BottomSurface = "Smooth"
		b2.Size = Vector3.new(1,1,1)
		y = Instance.new("BodyVelocity", b2)
  		y.maxForce = Vector3.new(math.huge, math.huge, math.huge)
  		y.velocity = Vector3.new(0,0,120)
		b2.Position = x4.Position
		----------------------------------------------------------------------Bullet 3
		b3 = Instance.new("Part",x3)
		b3.Name = "Bullet3"
		b3.Shape = "Ball"
		b3.TopSurface = "Smooth"
		b3.BrickColor = BrickColor.new("Black")		
		b3.BottomSurface = "Smooth"
		b3.Size = Vector3.new(1,1,1)
		y = Instance.new("BodyVelocity", b3)
  		y.maxForce = Vector3.new(math.huge, math.huge, math.huge)
  		y.velocity = Vector3.new(120,0,0)
		b3.Position = x3.Position
		----------------------------------------------------------------------Bullet 4
		b4 = Instance.new("Part",x2)
		b4.Name = "Bullet4"
		b4.Shape = "Ball"
		b4.TopSurface = "Smooth"
		b4.BrickColor = BrickColor.new("Black")		
		b4.BottomSurface = "Smooth"
		b4.Size = Vector3.new(1,1,1)
		y = Instance.new("BodyVelocity", b4)
  		y.maxForce = Vector3.new(math.huge, math.huge, math.huge)
  		y.velocity = Vector3.new(-120,0,0)
		b4.Position = x2.Position
		-----------------------------------------------------------------------End
		wait(0.8)
		game.Players.LocalPlayer.Character.Torso.Gun1:Destroy()
		game.Players.LocalPlayer.Character.Torso.Gun2:Destroy()
		game.Players.LocalPlayer.Character.Torso.Gun3:Destroy()
		game.Players.LocalPlayer.Character.Torso.Gun4:Destroy()
		b1:Destroy()
		b2:Destroy()
		b3:Destroy()
		b4:Destroy()
		
		
	end
end

mouse.KeyDown:connect(gunsummon)