Airsoft Mike sees red as he unboxes and gives his impressions on the Acetech Bifrost R tracer unit. Acetech Bifrost R is a tracer unit designed for Red tracer BB’s, featuring powerful UV LED’s and compatibility with Green tracers. It simulates multi-colored muzzle flash with RGB LED’s, without requiring Tracer BB’s. The device is IP65 protected, has a shake-to-power-on feature, and provides a bright tracer BB.