Theta Optics Monolith Red Dot Sight

Theta Optics
Code: THO-10-011604
  • Top 20mm Rail
  • Flip Up Lens Covers
  • Mirrored Front Lens

The Theta Optics Monolith Red Dot Sight is exactly what it says on the tin. A chunky and well constructed Red Dot Sight with an integrated 20mm Rail Mount, Flip Up Lens Covers and a Top 20mm Rail for further accessories.

Full description


This Red Dot Sight is designed to attach to 20mm Rails via the Integrated Rail Mount, making it compatible with pretty much every Airsoft Gun on the market. It comes with a set of Flip Up Lens Covers which can be easily deployed for transport/storage, as well as a top 20mm rail for you to install accessories such as a Laser, or even another Red Dot Sight! The sight is adjustable for Windage and Elevation by rotating the turrets on the top and side of the sight, no tools required. You have a choice of a Green or Red Target Dot, at 5x brightness levels each. The sight requires a CR1620 Battery which can be installed inside the Colour Selection Turret, by unscrewing the top cover of the turret.


  • Large Red Dot Sight
  • Flip Up Lens Covers
  • Top 20mm Rail
  • Integrated 20mm Mount
  • Windage/Elevation Adjust
  • Tool-Less Adjustments
  • Red/Green Target Dot
  • Mirrored Front Lens
  • CR1620 Battery Required

Package Includes

  • Theta Optics Monolith Red Dot Sight



Parts & Accessories Type
Sights and Scopes
Sight Type Icon
Sight Type
Red Dot Sight
Package Includes
Instruction Manual, Battery,

Weight and Dimension

Product Length
Approx. 13.4cm


Colour Wheel Greyscale
Item Colour
Construction Icon

Sight Specific

Sight Magnification
Sight Adjustment Adjustments
Windage, Elevation, Illumination,
Sight Zero Adjuster Method
Tool-less Adjustment
Sight Zero Location
Top, Right,
Sight Mount Options
Integrated Rail Mount
Reticle Type
Target Dot

Holographic Specific

Holographic Control Location

Illuminated Sight Specific

Illuminated Reticle Levels
Illuminated Reticle Colours
Red, Green,
Battery Type