Description:
The Echo 1 BB Tracer Barrel Extension is the best quality tracer unit available. The sensor creates a flash of light inside the barrel extension to ignite glow in the dark BBs so they can be seen while in flight. This barrel extension is equipped with a 14mm counter-clockwise threading to be used on a wide variety of airsoft guns. This unit is powered by 4 AAA batteries and has an easy access on/off switch at the base.

Specifications:
Length: 133mm (5.25")
External Diameter: 35mm (1.49")
Thread Type: 14mm Counter-Clockwise
Thread Position: The edge of the barrel extension
Recommended fit: M4, M16, G36, MP5