--Make sure the gun is not equiped when u execute.
local backpack = game.Players.LocalPlayer.Backpack
local gun = backpack['M4A1'] --Pistol,Baton,Shotgun,Baton etc.
local ss = gun['RifleScript'] --RifleScript,PistolScript,MeeleScript,ShotgunScript etc.
for i=1,10 do --u can change this to higher value if u want more damage
ss:Clone().Parent = gun
end