Theta Optics XTO Red Dot Reflex Sight for 20mm RIS / RAS Rails

Theta Optics
  • Holographic Reflex Sight
  • Red / Green Modes
  • For 20mm Rails

An Airsoft Red Dot / Holographic sight created by THETA OPTICS which is designed to be fit onto 20mm RIS / RAS Rails to make aiming your Airsoft gun easier and quicker giving you an advantage in CQB engagements. The sight projects a sighting picture using a laser on to the front glass lens which once zeroed will be where the pistol will shoot no matter the angle at which you can see the picture, this allows you to acquire targets quicker and more efficiently giving you an edge in an Airsoft game.

This sight is perfect for any Airsoft Skirmisher who is looking for a cheap but extremely effective red dot sight which won't break the bank without a loss in quality of picture.

Full description


The sight is constructed from alloy, and comes with realistic markings making the sight highly desirable for those doing a specific or themed load-out. The sight picture is bright and clear, and can be fully adjusted for windage and elevation. The sight is powered by a single CR123A battery, which is commonly used in many Airsoft and Weapon attachments.


  • Realistic and durable alloy construction
  • Airsoft holographic / reflex sight
  • Extremely clear sight picture
  • For 20mm RIS / RAS rails
  • Red / Green sight picture mode
  • Adjustable brightness settings for low / bright light conditions
  • Adjustable for Windage
  • Adjustable for Elevation
  • Tool-less installation
  • Can be tightened to the rail using a flat head screwdriver
  • Mock safety sticker
  • Powered by 1x 3V CR123A Battery
  • Branded:
    • 'CR123A'
    • 'UP-'

Package Includes

  • XTO Red Dot Reflex Sight for 20mm RIS / RAS Rails
  • CR123A 3v Battery
  • Lens Cleaning Cloth

Special Instructions

To turn the sight off press both the brightness up / down buttons at the same time.



Parts & Accessories Type
Sights and Scopes
Sight Type Icon
Sight Type
Reflex , Red Dot Sight,
Package Includes
Instruction Manual, Cleaning Cloth, CR123A 3V Battery,

Weight and Dimension

Product Height
Approx. 6.3cm
Product Length
Approx. 9.4cm
Product Width
Approx. 5.5cm
Weight KG Icon
Weight (KG)
Approx. 0.194kg


Colour Wheel Greyscale
Item Colour
Black, Tan ,
Construction Icon
Alloy body

Sight Specific

Sight Magnification
Sight Adjustment Adjustments
Windage, Elevation, Illumination,
Sight Zero Adjuster Method
Flat-Head Screwdriver
Sight Zero Location
Sight Mount Options
20mm RIS / RAS Rail
Sight Objective Lens Diameter
Reticle Type
Holographic Type
Holographic Type

Holographic Specific

Holographic Control Location

Illuminated Sight Specific

Illuminated Reticle
Illuminated Reticle Levels
Illuminated Reticle Colours
Red, Green,
Battery Type
CR123 / CR123A