Roger Friberg gives his take on the T238 Spitfire Tracer Unit, one of the tracer units by T238, which are known for their brushless AEG motor. The T238 tracer unit is a device that makes BBs/NERF darts/Gel balls glow in the dark, allowing users to see the flight path of their shots. Special tracer projectiles are required, and the tracer unit is powered by a rechargeable battery.