ArmaLaser GTO/FLX Finger Touch Green Laser Sight for Beretta PX4 Storm Compact Black. ArmaLaser designed these Green Laser Sights with 2 options for activation: the FLX switch for intuitive instant activation and the switch on the GTO that you can access with your index finger. The master on/off switch on the ArmaLaser GTO/FLX Red Laser Sight lets you turn it off to use BUIS or other optics. Customize your Beretta pistol with the ArmaLaser GTO/FLX Finger Touch Polymer Green Laser Sight. Specifications for ArmaLaser GTO/FLX Finger Touch Green Laser Sight for Beretta Handguns: Manufacturer: ArmaLaser Color: Black Beam Color: Green Laser Output: 4 mW Wavelength: 520 nm Maximum Range: 50 ft Attachment Type: Weaver Picatinny Battery Type: 357 CR1/3N Lithium Battery Life: Up to 2.3 hours Battery Quantity: 2 Gun Make: Beretta Fabric/Material: Zytel FRN Polymer Mount Type: Weaver Features of ArmaLaser GTO/FLX Finger Touch Green Laser Sight for Beretta Handguns Grip-Touch Activation by using FLX Side-Touch Activation without FLX Ultra-bright Class 3R 520nm Package Contents: ArmaLaser GTO/FLX Finger Touch Green Laser Sight for Beretta Handguns What firearm models does the manufacturer say ArmaLaser GTO/FLX Finger Touch Green Laser Sight for Beretta Handguns is compatible with? The manufacturer says that ArmaLaser GTO/FLX Finger Touch Green Laser Sight for Beretta Handguns is compatible with Beretta Px4 Storm Sub-Compact Beretta M9 Beretta 92 Beretta 96 Beretta Px4 Storm CompactArmaLaser GTOGFLX52: GTO/FLX Finger Touch Green Laser Sight for Beretta PX4 Storm Compact Black