The infiray outdoor ilr-1000 infrared laser rangefinder module integrates seamlessly with all rico mk1 series thermal rifle scopes, taking the guesswork out of range estimation, day or night.The ilr-1000 provides +/- 1-yard range-to-target accuracy out to 1000 yards and overlays these results on the display of a connected mk1 series rifle scope.A ultra-lightweight aluminum chassis secured by an intuitive qd mount ensures dead-nuts repeatability and ease of use, even while wearing gloves.Min. Distance: 5 ydsMax Distance: 1000 ydsWeight: 8.81 ozProofs: Waterproof