The new Acetech BiFrost Tracer Unit promises even more colours to use in a game and 4UAD Smart Airsoft gets to unbox one to find out if it does what the company says and even more tracers to have fun with in this video... "Tracers and blasters are the new thing for airsoft from the past 5 years, now days these little gadgets become the must have for some CQB players! This time after visiting Acetech, we got a bunch of tracers and wireless targets, gotta say we had a whole lot of fun! Don't forget to check out the Tracer Rain we created, with Dry ice and glow in Dark BBs that was one the most beautiful thing we've created on this Channel."