Eliminate any unwanted glare / halo shine from the side of your NS550. Also excellent for all NS550 IR (Infrared Illuminator) kits! Is that IR light spill washing out your night vision picture? The NightSnipe Halo shield is solution is your answer!! Made from a durable rubberized / silicone blend for pure silence, tight fit and easily folds / flattens for easy storage when not in use.