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)