Silent Aim

-- VARIABLES
local plrs = game:GetService("Players")
local plr = plrs.LocalPlayer
local mouse = plr:GetMouse()
local camera = game:GetService("Workspace").CurrentCamera

-- FUNCTIONS
function notBehindWall(target)
    local ray = Ray.new(plr.Character.Head.Position, (target.Position - plr.Character.Head.Position).Unit * 300)
    local part, position = game:GetService("Workspace"):FindPartOnRayWithIgnoreList(ray, {plr.Character}, false, true)
    if part then
        local humanoid = part.Parent:FindFirstChildOfClass("Humanoid")
        if not humanoid then
            humanoid = part.Parent.Parent == target.Parent
        end
        if humanoid and target and humanoid.Parent == target.Parent then
            local pos, visible = camera:WorldToScreenPoint(target.Position)
            if visible then
                return true
            end
        end
    end
end

function getPlayerClosestToMouse()
    local target = nil
    local maxDist = 100
    for _,v in pairs(plrs:GetPlayers()) do
        if v.Character:FindFirstChild("Humanoid") and v.Character.Humanoid.Health ~= 0 and v.Character:FindFirstChild("HumanoidRootPart") and v.TeamColor ~= plr.TeamColor then
            local pos, vis = camera:WorldToViewportPoint(v.Character.HumanoidRootPart.Position)
            local dist = (Vector2.new(mouse.X, mouse.Y) - Vector2.new(pos.X, pos.Y)).magnitude
            if dist < maxDist and vis then
                local torsoPos = camera:WorldToViewportPoint(v.Character.HumanoidRootPart.Position)
                local torsoDist = (Vector2.new(mouse.X, mouse.Y) - Vector2.new(torsoPos.X, torsoPos.Y)).magnitude
                local headPos = camera:WorldToViewportPoint(v.Character.Head.Position)
                local headDist = (Vector2.new(mouse.X, mouse.Y) - Vector2.new(headPos.X, headPos.Y)).magnitude
                if torsoDist > headDist then
                    if notBehindWall(v.Character.Head) then
                        target = v.Character.Head
                    end
                else
                    if notBehindWall(v.Character.HumanoidRootPart) then
                        target = v.Character.HumanoidRootPart
                    end
                end
                maxDist = dist
            end
        end
    end
end

-- HOOKING TO THE REMOTE
local gmt = getrawmetatable(game)
setreadonly(gmt, false)
local oldNamecall = gmt.__namecall

gmt.__namecall = newcclosure(function(self, ...)
    local Args = {...}
    local method = getnamecallmethod()
    if tostring(self) == "HitPart" and tostring(method) == "FireServer" then
        Args[1] = getPlayerClosestToMouse()
        Args[2] = getPlayerClosestToMouse().Position
        return self.FireServer(self, unpack(Args))
    end
    return oldNamecall(self, ...)
end)