The TLR-1 HPL produces a wide, 775 lumen beam pattern with brighter peripheral illumination and superior down-range performance. Features C4 LED technology, impervious to shock with a 50,000 hour lifetime 775 lumens 438m beam distance 48,000 candela peak beam intensity runs 1.75 hours Mounts directly to all MIL-STD-1913 Picatinny rails and weapons with Glock-style rails Includes rail locating keys for mounting to a variety of rails and lithium batteries. Available with either standard door switch or remote door switch. Standard Switch Ambidextrous momentary/steady On-Off. Remote Switch Momentary/steady On-Off and port plug for remote switch assembly Tethered battery door and latch mechanism prevents battery door loss while providing easy battery replacement. One handed snap-on and tighten interface keeps hands away from muzzle when attaching/detaching Extensively live-fire tested impact resistant construction Deep dish parabolic reflector produces long-range target Streamlight TLR-1 HPL Long Gun Kit; Lithium Battery TLR-1 HPL Long Gun Kit; Lithi Batt.