Add advanced functionality and control of your AEG right at your fingertips with the Xcortech X3300W MK2 Chronograph & Tracer Unit. This system consists of a barrel mounted tracer unit, rail mounted control unit and plugin MOSFET. Ultra Bright UV Light Tracer Unit. ROF and Muzzle Velocity measurement. Batteries: 4x AAA and 2x AA (not included).
Fitting: Tracer - 14mm CCW / Control Unit - 20mm picatinny / MOSFET - small tamiya. Tracer Dimensions: 37 x 154mm.