Big Dragon Night Combat Tracer Unit BB Illuminator (Color: Black)

"Horrable. Will only light up one shot at a time with a pause in between shots and won't light up in rapid semi auto or full auto. Waste of money

"This thing is very poorly built.
The battery housing fell apart after just a few uses because it is just pieces of circuit board soldered together.
I custom built a new battery housing and now it works again, but who knows for how long.