Absolutely fantastic tracer I run the larger version on my rifle and this on my indoor pistol. Was sent a handful to review, this is brand new unopened box. Features a muzzle flash, tracer bb glow, and the combination of running both at the same time or one or the other. T238 LITE+ tracer unit ,it is designed for small Airsoft blasters, it attachments to your blaster which allow your BB to glow in the dark. To see the flight path of your shot, special tracer BBs are needed. When using RGB+ version, you can still see a rainbow of gunfire effect without the help of special bullets.