Which Red Dot Should I Buy? Red Dots Explained

Published on December 12, 2025
Duration: 11:11

This guide, drawing on expertise from Geauga Firearms Academy instructors, covers the selection and installation of red dot sights for handguns. It emphasizes choosing optics-ready firearms, understanding mounting footprints, and comparing different reticle and emitter types. Proper mounting and zeroing procedures are crucial for effective use in self-defense scenarios.

Quick Summary

When choosing a red dot sight for your handgun, consider optics-ready slides to save on milling costs and improve resale value. Match the optic's footprint to your slide or adapter plate, and decide between open emitters (lighter, cheaper) and closed emitters (more durable). Reticle choice (dot vs. circle-dot) and color (red vs. green) also impact performance.

Chapters

  1. 00:00Introduction to Red Dots
  2. 00:46What are Red Dots?
  3. 01:18Optics-Ready Handguns
  4. 02:03Mounting and Footprints
  5. 03:21Red vs. Green Dots
  6. 03:44Reticle Options
  7. 04:28Auto-Adjust and Lighting
  8. 06:17Open vs. Closed Emitters
  9. 07:54Cost and Brands
  10. 09:19Sighting In and Maintenance

Frequently Asked Questions

What is the main difference between red dot sights and lasers?

Red dot sights use an emitter to project an illuminated aiming point (the dot) onto a lens inside the optic, which the shooter sees. Lasers, conversely, project a beam of light directly onto the target itself.

Why is an optics-ready handgun slide recommended?

Optics-ready slides come pre-milled with a mounting interface for red dot sights, saving the cost and complexity of custom gunsmithing. They also tend to improve the firearm's resale value.

What should I consider when choosing between an open and closed emitter red dot sight?

Closed emitter sights offer better protection from debris, moisture, and lint, making them ideal for concealed carry or duty use. Open emitter sights are typically lighter and less expensive but leave the emitter more exposed.

How do I ensure my red dot sight will fit my handgun?

You need to match the optic's 'footprint' (the mounting pattern) to the cut on your handgun's slide or the specific adapter plate you are using. Common footprints include RMR and RMSc.

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