Teh Lag (stylized as T3hlag) is an animator for Halo Custom Edition.
Teh Lag made his own animations for the Needler. The reload animation is the person opens the top shroud an puts a crystal in.
Teh Lag made his own animations for the Covie Beam Rifle. When it overheats, it will release the heat and prepare to fire.
See his videos on You Tube.