Theta Optics 3x35 Flip-to-Side Magnifier w/QD Mount

Theta Optics
Code: THO-10-011610
  • Aluminium construction
  • Alloy 20mm Picatinny flip-to-side mount
  • QD Magnifier mount - Remove or mount in seconds!

If you need a long range aiming solution to compliment your red dot sight, a flip-to-side magnifier will do the trick! The Theta Optics 3x35 Flip-to-Side Magnifier w/QD Mount is designed to mount behind your red dot sight and magnify the image and reticle by a factor of 3, giving you a better view of long range targets and the option to quickly switch between magnified and unmagnified aiming quickly when the enemy closes ground.

The magnifier is constructed from aluminium with an alloy 20mm Picatinny mount which also allows you to quickly remove the magnifier while the mount stays in place. This means that if you are clearing a building you can choose between leaving the magnifier on your gun, flipped to the side and ready to use quickly, or remove it entirely to save some weight for faster target-to-target transitions. If you want a better view of your target but don't want the excessive weight which comes with a full-sized riflescope, a red dot and magnifier combo is a great middle ground between the MK1 eyeball and longer, heavier optics!

Full description


The Theta Optics 3x35 Flip-to-Side Magnifier w/QD Mount is designed to mount to a 20mm Picatinny rail, positioned behind a red dot sight, and magnifies the image and reticle to give you a better view of your target. The included mount is a flip-to-side mount and is spring-loaded to provide fast changes between configurations.

Pulling the silver catch on the left side of the mount down will flip the magnifier to the side and out of the way of your red dot sight's reticle and allow you to engage at close range with no magnification. Pushing the magnifier back into position will magnify the image by a factor of 3, and requires no tools or buttons to be locked into place, simply rotate the magnifier back into position, push it down and the mount will do the rest.

The magnifier can also be used on its own as a spotting monocular and can quickly be disconnected from its flip-to-side mount via the QD lever on the side. This allows the magnifier to be stored in a pouch until needed and remounted quickly and without tools, saving weight on your primary when you don't need the magnifier and allowing for greater agility without needing to make that decision in the safe zone.

The QD mount also allows the magnifier to be flipped to either the left or right side of your primary and all you need to do to swap configurations is open the QD throw-lever, remove the magnifier from the mount, rotate it 180 degrees and remount it. This is great for left-handed shooters as it allows the magnifier to flip to the left side, clear of a lefties field of view to mirror the default right-handed configuration.

Adjustment for windage and elevation is provided via the two adjustment screws on the left side of the mount; the foremost of which controls the elevation adjustment, and the rearmost the windage adjustment. This allows you to get perfect alignment with a raised red dot sight or an "EO" holographic-style red dot, though your sight setup will need to be zeroed via your red dot sight itself.

The focus adjustment dial surrounds the ocular lens at the rear and is concealed beneath a flip-up lens cover. Removing the cover allows you to adjust the focus to suit your eyes and get a nice clear view of both the reticle and the target. A pair of flip-up covers are pre-installed out of the box and can be removed or left on the magnifier to protect it during storage and transportation.

If you want a clearer view of your target, improved accuracy and better situational awareness at long range, a magnifier combined with a red dot sight is perfect for the job. The Theta Optics 3x35 Flip-to-Side Magnifier w/QD Mount offers some serious functionality for the price and can do double duty as a weapon-mounted magnifier or as a hand-held spotting monocular!


  • Aluminium construction
  • Alloy 20mm Picatinny flip-to-side mount - Super quick deployment
  • QD Magnifier mount - Remove or mount the magnifier in seconds
  • Flip-up lens caps - Keeps the lenses safe during storage and transportation
  • Windage and elevation adjustment - Adjust at the front and rear of the mount on the left side using included Allen key
  • Focus adjustable - Remove the rear flip-up cap and adjust until your sight picture is clear
  • Designed to mount behind a red dot sight - Magnifies your reticle and image for long-range shooting
  • Ideal for holographic style and raised red dot sights - Height from rail to centre of the lens is approx 4cm

Package Includes

  • Theta Optics 3x35 Flip-to-Side Magnifier w/QD Mount
  • Allen key x2
  • Flip-up lens caps (pre-installed)



Parts & Accessories Type
Sights and Scopes
Sight Type Icon
Sight Type
Package Includes
Flip to Side Mount, Magnifier,

Weight and Dimension

Product Height
Approx. 7.2cm
Product Length
Approx. 13.5cm
Product Width
Approx. 6cm
Weight KG Icon
Weight (KG)
Approx. 0.385kg


Colour Wheel Greyscale
Item Colour
Construction Icon
Aluminium monotube. Alloy mount with steel springs, steel QD locking lever and bolts.

Sight Specific

Sight Magnification
Sight Adjustment Adjustments
Windage, Elevation, Focus,
Sight Zero Adjuster Method
Adjustment Tool Required, Hex / Allen Key,
Sight Zero Location
Front, Back,
Sight Mount Options
20mm RIS / RAS Rail
Sight Objective Lens Diameter
Reticle Type

Telescopic Specific

Scope Eye Piece Size
Sight Mount Rings Included
Scope Tube Diameter