M6 Lithium Tactical Light-The newest addition to the Black Knight™ Series is the M6 Lithium. This new light is sure to be a vital asset to the Law Enforcement market with its extreme brightness and durable construction enables it to withstand rugged conditions while out in the field. The M6 is packaged with a free Cordura® holster and 2 CR123 Lithium batteries. You break it, we replace it... forever. sold per light