ArmaLaser GTO/FLX Finger Touch Red Laser Sight for Ruger American Black. These Red Laser Sights crafted by ArmaLaser utilize an FLX function that automatically activates the laser by simply gripping your pistol as you normally would. There's no need to reach for a switch or have an awkward button on the grip. If you're not interested in the FLX feature you can always simply touch the sides of the laser to activate it. The ArmaLaser GTO Tactical Laser Sight also contains a convenient battery door so that you can easily change the batteries without compromising the positioning of the laser. This aiming assist laser shines bright at 635nm and contains steady and pulsing beam options. Easily adjust windage and elevation to get the most accurate laser position possible. Scoop up your ArmaLaser GTO/FLX Ruger Laser Sight for your Picatinny or Weaver rail setup and experience the benefit of having a reliable aiming point especially in low light conditions. Specifications for ArmaLaser GTO/FLX Finger Touch Red Laser Sight for Ruger Handguns: Manufacturer: ArmaLaser Color: Black Beam Color: Red Laser Output: 4 mW Wavelength: 635 nm Maximum Range: 50 ft Attachment Type: Weaver Picatinny Battery Type: 357 CR1/3N Lithium Battery Quantity: 2 Gun Make: Ruger Mount Type: Weaver Features of ArmaLaser GTO/FLX Finger Touch Red Laser Sight for Ruger Handguns Grip-Touch Activation by using FLX Side-Touch Activation without FLX Ultra-bright Class 33R 635nm Package Contents: ArmaLaser GTO/FLX Finger Touch Red Laser Sight for Ruger Handguns What firearm models does the manufacturer say ArmaLaser GTO/FLX Finger Touch Red Laser Sight for Ruger Handguns is compatible with? The manufacturer suggests that ArmaLaser GTO/FLX Finger Touch Red Laser Sight for Ruger Handguns is compatible with Ruger SR9c Ruger SR40c Ruger SR40 Ruger SR9 Ruger SR45 Ruger P95 w/ Rail Ruger SR22 Ruger P345 Ruger 22/45 Ruger American Pistol Sub-Compact Ruger American Pistol Compact Ruger Security-9 Ruger American PistolArmaLaser GTOFLX73: GTO/FLX Finger Touch Red Laser Sight for Ruger American Black