Wierd script problem i guess

[Forummer]

local players = game:GetService("Players")
local rs = game:GetService("ReplicatedStorage")

players.PlayerAdded:Connect(function(plr)			
	plr.CharacterAppearanceLoaded:Connect(function(char)
		local torso = char:FindFirstChild("Torso")
		if torso then
			local M6D = Instance.new("Motor6D")
			M6D.Parent = torso
			M6D.Name = "ToolGrip"
			print("ToolGrip Created")
		end
	end)
end)

rs.ConnectM6D.OnServerEvent:Connect(function(plr)
	local char = plr.Character
	local bp = plr.Backpack
	local pistol = bp.Pistol
	local gun = pistol.Gun
	local bodyAttach = gun.BodyAttach
	local torso = char:FindFirstChild("Torso")
	if torso then
		torso.ToolGrip.Part0 = torso
		torso.ToolGrip.Part1 = bodyAttach
	end
end)

rs.DisconnectM6D.OnServerEvent:Connect(function(plr)
	local char = plr.Character
	local torso = char:FindFirstChild("Torso")
	if torso then
		torso.ToolGrip.Part1 = nil
	end
end)

Remember that because “Torso” is where the Motor6D instance is parented to this will only work for R6 avatars as for R15 avatars that joint is split into a lower torso and upper torso.

It’s also best to avoid using the parent parameter, more about that here.

PSA: Don't use Instance.new() with parent argument

I’ve discovered a pretty bad performance issue in one of top games that has to do with Instance.new and wanted to write about this, since this is not obvious unless you know the system inside out. Tthere are several ways to create a ROBLOX object in Lua: local obj = Instance.new(‘type’); fill obj fields local obj = Instance.new(‘type’, parent); fill obj fields local obj = util.Create(‘type’, { field1 = value1, … }) If you care at all about performance, please only use the first option - I wi…

I’ve swapped CharacterAdded for CharacterAppearanceLoaded as that fires when the character’s avatar is loaded.

You’re also referencing the tool inside StarterPack, not the tool inside the backpack folder of the player instance (which is where tools are copied to from the StarterPack folder each time the player’s character reloads/spawns etc.).