The dual-mode configuration switch adapts to the many application scenarios of each user. The light can also be reprogrammed to High1 (1500 lm) or High2 (1000 lm), allowing customers to select their preferred brightness level The key-block rail mount on the PL-3R Valkyrie weaponlight is adjustable to allow various rail configurations. The product also comes with both GL and Picatinny rail inserts for excellent compatibility, included as standard