(wrong reply sorry)
There is also a much cleaner way of determining whether a basepart belongs to a player’s character using certain API methods (GetPlayerFromCharacter and FindFirstAncestorOfClass):
local plrs = game:GetService'Players';
local function getPlayerFromBasePart(obj: BasePart)
return plrs:GetPlayerFromCharacter(obj:FindFirstAncestorOfClass'Model'); -- returns the player whos character possesses the basepart, otherwise returns nil (similar to false in luau boolean logic)
end