ArmaLaser Glock 17 19 20-23 31 32 34 35 37 38 41 GTO Red Laser/FLX20 Grip Switch, Black Extremely bright 635nm Red Laser with grip activation. Just grasp pistol normally to turn laser on. Custom fit FLX20 ultra thin remote touch sensor switch for GLOCK 17 19 20 21 22 23 31 32 34 35 37 38 41 included. Uses human touch technology to turn on, no mechanical switch or push button or holster activation. Adjustable laser, battery door, master kill switch. Made from DuPont Zytel polymer pistol material. Designed, assembled in Florida, USA. Patented. Ultra reliable electronics. Simple installation. Grip-Touch Activation by using FLX Side-Touch Activation without FLX Ultra-bright 635nm red laser Fits onto almost any Picatinny Rail Matte black, blends into pistol finish Virtually undetectable from the side 3M backing, very aggressive &amp; conforming with no harm to pistol finish Gold plated touch sensor Chemical resistant No reaching for a switch No awkward button on the grip FLX allows GTO to turn on instantly