The ILR-1200-1 Laser Range Finder is a must have addition to any iRay USA BOLT V2 and BOLT SE Thermal Weapon Sights. It features a lightweight, compact profile and securely attaches to the BOLT V2/BOLT SE with a 30mm quick detach clamp mount to ensure repeatability and easy operation. Once attached, the ILR-1200-1 wirelessly transmits range information to the host-optic’s display. Features: Lightweight, compact design Quick detach mechanism Wirelessly transmits range information to the host-optic’s display iRayUSA InfiRay Outdoor ILR-1200-1 Laser Rangefinder BOLT Series IRAY-AC80