My hit detection for my bullets wont work for some reason and it wont print "Hit!" in the output??

local rs = game:GetService("ReplicatedStorage")
local gunEvent = rs:WaitForChild("GunEvent")
local gunsound = game:GetService("StarterPack")
local shootingsound = gunsound.Tool.Part.Sound
gunEvent.OnClientEvent:Connect(function(player, startPos, endPos)
    shootingsound:Play()
     local part = Instance.new("Part")

    part.Size = Vector3.new(.25,.25,10)
    part.CFrame = CFrame.new(startPos, endPos)

    local bv = Instance.new("BodyVelocity", part)
    bv.MaxForce = Vector3.new(math.huge,math.huge,math.huge)
    bv.Velocity = part.CFrame.LookVector * 800

    part.Parent = game.Workspace.CurrentCamera
    part.CanCollide = false
    part.Material = ("Neon")


    part.BrickColor = BrickColor.new("New Yeller")

    local function onTouch(hit)
    if (hit.Parent:findFirstChild("Humanoid") ~= nil) then
        print(hit)
        print("Hit!")
        hit.Parent.Humanoid.Health = 0
part.Touched:connect(onTouch)

    delay(1, function()
        part:Destroy()

    end)
    end
    end
end)

I am having trouble with this script. I coded it so that it would print "Hit!" in the output, and it doesn't. There are no errors in the output so I am stuck on this one. How do I make it so that when a bullet hits a humanoid, it prints "Hit!"..? What am I doing wrong?

BEFORE CHANGES (original script): https://gyazo.com/f67f6219f411ac944532c7e5d099e363

AFTER CHANGES (after i attempted to make a hit detection): https://gyazo.com/5dcab6a86e787c4816e5e0c5856ea0bb