Streamlight PROTAC 2.0 Rail Mount Weapon Light Only with SL-B50 Battery Pack and USB-C Charging Cord The Streamlight ProTac 2.0 Rail Mounted Weapon Light is a compact, powerful light designed for long guns. It mounts directly to 1913 Picatinny rails making it compatible with a broad range of weapons. Powered by a rechargeable SL-B50 battery pack, the ProTac 2.0 RM Weapon Light produces up to 2,000 lumens of bright light in the highest mode. The multi-function tailcap features push buttons that allow users to switch between high/strobe, high only, or low/high modes and can be programmed with the ten-tap switch. Specifications: - Modes: Constant, Momentary, Strobe - Operating Modes: High/Strobe, High Only, Low/High -- High: 2,000 lumens with 2.5-hour runtime -- Low: 250 lumens with 11-hour runtime -- Strobe: 4.5-hour runtime - Battery Life: 25,001 - 50,000 Hours - Battery Type: USB Rechargeable - Color: Black - Material: Aluminum - Mount Type: Rail Mount - Output: 2000 Lumens - Weight: 9.06 oz