Streamlight's TLR-1 Game Spotter is a long-range, rail-mounted tracking light. It features a shock-proof green C4 LED that produces a long-range beam that reaches 350 meters. This game spotter mounts directly to all MIL-STD-1913 Picatinny rails and weapons with Glock-style rails. Included is a rail locating keys for mounting to a variety of rails and lithium batteries.