ArmaLaser GTO/FLX Finger Touch Red Laser Sight for Beretta PX4 Storm 45D Black. ArmaLaser designed these Red 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 Red Laser Sight. Specifications for ArmaLaser GTO/FLX Finger Touch Red Laser Sight for Beretta Handguns: Manufacturer: ArmaLaser Color: Black Beam Color: Red Laser Output: 4 mW Wavelength: 635 nm Attachment Type: Weaver Picatinny Battery Type: 357 CR1/3N Lithium Battery Quantity: 2 Gun Make: Beretta Mount Type: Weaver Features of ArmaLaser GTO/FLX Finger Touch Red Laser Sight for Beretta 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 Beretta Handguns What firearm models does the manufacturer say ArmaLaser GTO/FLX Finger Touch Red Laser Sight for Beretta Handguns is compatible with? The manufacturer says that ArmaLaser GTO/FLX Finger Touch Red Laser Sight for Beretta Handguns is compatible with Beretta M9 Beretta 92 Beretta 96 Beretta Px4 Storm Compact Beretta Px4 Storm Type D Beretta APX Beretta 92F CompactArmaLaser GTOFLX85: GTO/FLX Finger Touch Red Laser Sight for Beretta PX4 Storm 45D Black