broadcasting mouse.Target over a remote event killing player even though it should be "Stone"?

So i am a tool that when you click on a certain block it destroys the block. but when i broadcast mouse.Target it always seems to be the humanoid even if the name of it is "Stone". Client side code:

local Players = game:GetService("Players")

local localPlayer = Players.LocalPlayer
local backpack = localPlayer:WaitForChild("Backpack")

local tool = Instance.new("Tool")
tool.RequiresHandle = false
tool.CanBeDropped = false 
tool.Parent = backpack

tool.Equipped:Connect(function(mouse)
    mouse.Button1Down:Connect(function()
        if mouse.Target and mouse.Target.Parent then
            game.ReplicatedStorage.DestroyBlock:FireServer(mouse.Target)
            print(mouse.Target.Name)
        end
    end)
end)

Server side code:

game.ReplicatedStorage.DestroyBlock.OnServerEvent:Connect(function(part)
    part:Destroy()
end)

Thank you!