Nitecore P10GT 900 Lumens Rifle Mountable Premium LED Tactical Flashlight Kit with LumenTac Picatinny Rail Mount and Strobe Ready Pressure Switch ENHANCED THROW - Upgraded for 2017, the P10GT (Grand Throw) uses a Cree XP-L HI V3 LED to throw up to 900 lumens an impressive 312 yards - 100 lumens and over 100 yards more than the P10. DIRECT ACCESS TO STROBE - Tactical, military and law enforcement users will enjoy the dual-switch tailcap which allows for easy single-handed operation. The main button turns the flashlight on/off while the secondary saddle switch can be used for direct access to strobe and output adjustment. SLIM DESIGN FOR MOUNTING - The P10GT has a standard 1 body tube and weighs under 3 ounces (without battery) making it suitable for weapon mounting.. MULTI MODE SETTINGS - Customize your P10GT further with three defined user modes: Tactical Mode, Law Enforcement Mode and General mode. Each offers different brightness settings (up to 4 in General mode) to create task-specific outputs. COMPLETE TACTICAL & MOUNTING KIT - Nitecore P10GT Tactical Flashlight, Padded Tactical Carrying Case, Premium Holster, Removable Steel Belt/Pocket Clip, Nitecore Lanyard, Tactical "Cigar" Ring, CR123 Battery Magazine, Replacement Rubber Switch Cap, 2x Spare O-rings, lumen Tactical Picatinny offset rail mount, Nitecore RSW2 Remote pressure switch, Hex-key Allen wrench, & 2x CR123A Batteries Loosen the tail cap Press and hold the paddle switch while tightening the tail cap 3 flashes: General mode (High, Mid, Low, Strobe) 2 flashes: Tactical mode (High, Strobe) 1 flash: Law Enforcement (High, Low, Strobe)