Red Dot Laser Product instruction: 100% brand new. Clear and super bright laser dot sight Mounting latch(20mm switchable) fixes laser sight to weapon securely Windage and elevation can be adjusted by Allen wrench Direct clamp-on installation, quick release Suitable for fast aiming and shooting at stationary and moving objects Remote Pressure Switch: Switch 1: Tailcap On/Off Switch 2: Light momentary on switch by Pressure Pad Specifications: Power: Metal housing Wavelength: red 635nm~655nm Laser Range: 100M Tube size: 17mm Size: approx 57mm*11mm*29mm Net Weight:57g Weight: 67g Fits for most 20mm tactical rail Power: 3pcs x AG13 Cell batteries(included batteries) Notice: Class IIIA product, avoid direct eye exposure to laser beam Never point a laser beam at a person 2in1 Mount Product instruction: Model Number: Barrel Rings Mount Type: Scope Barrel Ring Mount Color : Black Material: Aluminum Pieces: 1 Rail Type: 10-20mm Barrel Ring Diameter: 25.4mm Designed to install a Flashlight, Laser Sight or Rifle Scope onto the gun barrel(10mm-20mm diameter) Flashlight Mount can also be installed on standard weaver rail alone. Suitable for 25.4mm Tube Fully adjustable with nuts & screws included Complete solution for Mounting Flashlight & Laser Sight & Scope on 10-20mm Barrel Constructed of Full Metal Material, extra Strong Shock Absorption ability Matte Black Finish looks so COOL on any 10-20mm Barrel Package Inlcude 1x Tactical Red Laser Beam Dot Sight 2x Allen wrenches 3x Button cells 1x Remote Pressure Switch 1 x Double sided Barrel Rings Mount 1 x 25.4mm mounting ring