Echo1 Tracer Unit
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The Echo1USA 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.