The ADPT-HL1-OC rail mount is designed specifically for the ops core helmet rail systems for use with the Hl1 helmet light. The SureFire helmet light provides low-signature, night-vision friendly illumination for night navigation and close-quarter work like reading maps, loading gear, or repairing equipment in the field. Featuring virtually indestructible LEDs, the compact, weatherproof helmet light produces white, colored, and Infrared output at multiple power levels. Designed originally for military and SWAT applications, the lightweight SureFire helmet light is also an option for Carving, climbing, construction, or search-and-rescue operations.