Specific Compatibility: Specifically fits Most Glock Gen 4/Gen 5 Models; refer to Streamlight's fit guide before purchase Bright Performance; 500 Lumens; 5000 Candela intensity with a 140 Meter beam distance and a run time of 1 Hour on high mode Designed for One-Handed Shooting: Either left-handed or right-handed; ideal for dog handlers, SWAT team, door breaching, and close-quarter operations Safety by Streamlight: Rail-grip clamp securely attaches/detaches without putting your hands in front of the muzzle Built Streamlight Tough: Durable 6000 series machined aircraft aluminum construction; 1PX7 waterproof to 1 Meter for up to 30 Minutes