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Customer Reviews
Most Recent Reviews
Gideon Mediator by Mason, Verified Owner, February 9, 2026
Runs great on my 300blk pdw build, multiple range trips with supers and subs. Holds zero perfect. Also looks very cool. I get lots of compliments on this optic, Acro footprint also so other risers on the market are compatible.
Most Recent Reviews
good quality at a good price by Trevor Gasper, Verified Owner, December 16, 2025
This optic is great for the price with the multi reticle option and good construction.
Read All 2 Reviews
5% Bonus Bucks
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Color:
Black
Reticle:
Circle-Dot
Illumination Color:
Red
Red Dot Sights-Footprint:
Aim Point Acro
Base/Mount Type:
Top Mount

Code: 5N2-RD-GOMRRD-MD20RD

MPN: MD20RD

UPC: 634707024139

5% Bonus Bucks
$249.99

Product Info for Gideon Optics Mediator II 1x 21.4x18.8mm Closed Emitter Reflex Red Dot Sight

The Mediator II ACRO sight is a practical closed-emitter red dot optic that allows for faster target acquisition and improved accuracy in challenging environmental conditions. Using powerful LED emitters that reflect a bright reticle onto a specially coated lens, aiming becomes as easy as point-and-shoot. This enclosed ACRO red dot is engineered to meet the challenges of real-world tactical situations while maintaining a confident sight picture. Get the enclosed red dot your gun needs without breaking the bank.image

WARNING: California`s Proposition 65

Specifications for Gideon Optics Mediator II 1x 21.4x18.8mm Closed Emitter Reflex Red Dot Sight:

Manufacturer: Gideon Optics
Color: Black
Fabric/Material: 7075-T6 Aircraft Grade Aluminum
Magnification: 1 x
Objective Window Size: 21.4x18.8 mm
Reticle: Circle-Dot
Illumination Type: LED
Illumination Color: Red
Brightness Settings: 10
Eye Relief: Unlimited
Adjustment Click Value: 1 MOA
Emitter Type: Enclosed
Lens Material: Glass
Battery Type: CR2032
Battery Life: 50000 hours
Water Resistance Level: IPX-7
Shockproof: Yes
Fogproof: Yes
Length: 47.1 mm
Width: 30.4 mm
Height: 35.2 mm
Weight: 3.25 oz
Lens Finish: Multi-Coated
Red Dot Sights-Footprint: Aim Point Acro
Base/Mount Type: Top Mount

Features of Gideon Optics Mediator II 1x 21.4x18.8mm Closed Emitter Reflex Red Dot Sight

  • Closed-Emitter Excellence, Redesigned
  • Built to be a worthy successor to our popular Mediator Death Toaster closed reflex sight, the Mediator II ACRO sight gives you the performance youre used to in a reimagined design tailored for tactical performance.
  • Uses an Aimpoint ACRO-type footprint for mounting to compatible slides, adapter plates, or the included 1913 Picatinny Mount.
  • 7075-T6 aircraft-grade aluminum enclosed housing gives you a tough-as-nails chassis to protect your emitter and 21.4mm X 18.8mm multi-coated lenses.
  • Ten adjustable brightness levels (eight daytime and two night-vision-compatible) for a 38/3 MOA circle-dot multi-reticle thats tailored to meet your accuracy needs and environmental conditions.
  • Fogproof, IPX-7 waterproof, and shockproof to 2100Gs of force.
  • 90 MOA total adjustable windage and elevation range (45 MOA each).
  • Shake-to-awake power-saving mode turns off the reticle after 225 seconds of inactivity to extend the life of your CR-2032 3V Lithium-Ion battery for up to 50,000 hours. It turns back on in milliseconds with the slightest movement for rapid-reaction shooting.
  • The top-load battery compartment doesnt require the removal or re-zeroing of the optic.
  • Parallax-free to 33 yds. with unlimited eye relief.
  • Measures 47.1mm X 30.4mm X 35.2mm and weighs just 3 oz.
  • Backed by our unsurpassed lifetime warranty against defects. If your optic fails for any reason short of misuse or intentional abuse, contact our support team for a replacement

Package Contents:

  • Gideon Optics Mediator II 1x 21.4x18.8mm Closed Emitter Reflex Red Dot Sight
  • Picatinny Riser Mount
  • Cleaning Cloth
  • Manual
  • T10 and Windage/Elevation Adjustment Tools

Gideon Optics Mediator II 1x 21.4x18.8mm Closed Emitter Reflex Red Dot Sight Orderable Models

List of Orderable Models

  • Gideon Optics Mediator II 1x 21.4x18.8mm Closed Emitter Reflex Red Dot Sight, 3 MOA Red Dot + 28 MOA Circle, Black, MD20RD , MPN: MD20RD , UPC: 634707024139 , Code: 5N2-RD-GOMRRD-MD20RD
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