Elite Force M4 CFR Eyetrace-Black/TanElite Force Airsoft is breaking new ground with the M4 CFR EYETRACE. The M4 CFR EYETRACE has a built in LED tracer unit so you can light up the night with your favorite EF Tracer BBs! With a full length M LOK hand guard, adjustable stock and ergonomic grip, all finished in Desert Tan, flip up and removable sights, and the ability to accept 9. 6 11. 1v LiPo batteries, the M4 CFR EYETRACE AEG means business on the airsoft field. Features Built in LED