Which Red Dot Should I Buy? Red Dots Explained

Published on December 12, 2025
Duration: 11:11

This guide, presented by instructors from Geauga Firearms Academy, covers the essential considerations for selecting and installing a red dot sight on a handgun. It emphasizes choosing optics-ready firearms, understanding mounting footprints, comparing reticle and emitter types, and practical maintenance tips like annual battery changes and sighting in at 15 yards. The instructors highlight the benefits of closed emitters for carry guns and recommend reliable brands like Holosun.

Quick Summary

When choosing a red dot sight, consider the handgun's optics-ready status and match the optic's footprint to the slide cut, using adapter plates if necessary. Compare reticle types like circle-dot for self-defense and decide between open emitters (lighter, cheaper) and closed emitters (more durable, easier maintenance). Annual battery changes and sighting in at 15 yards are key maintenance practices.

Chapters

  1. 00:00Introduction to Red Dot Sights
  2. 00:46What is a Red Dot Sight?
  3. 01:18Optics-Ready Handguns Explained
  4. 02:03Understanding Optic Mounting and Footprints
  5. 03:21Red vs. Green Dot Comparison
  6. 03:44Choosing Red Dot Reticle Options
  7. 04:28Auto-Adjust vs. Manual Brightness
  8. 06:17Open vs. Closed Emitter Red Dots
  9. 07:54Red Dot Sight Cost and Brands
  10. 09:19Sighting In and Maintenance Tips

Frequently Asked Questions

What is the main difference between a red dot sight and a laser sight?

A red dot sight uses an emitter to project an aiming reticle (like a dot) onto a lens within the optic itself. A laser sight, conversely, projects a visible or invisible beam directly onto the target.

Why should I buy an optics-ready handgun?

Optics-ready handguns come with a slide already milled to accept red dot sights, saving you the cost and hassle of custom gunsmithing. They also tend to have better resale value.

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

You must match the optic's 'footprint' (mounting pattern) to the handgun's slide cut. If they don't match, you may need an adapter plate from the firearm manufacturer or a third party.

What are the pros and cons of open vs. closed emitter red dots?

Open emitters are lighter and cheaper but exposed to debris. Closed emitters are protected from lint and elements, making them easier to maintain, especially on carry guns, though they can be slightly heavier.

Related News

All News →

More Tactical & Gear Videos You Might Like

More from Geauga Firearms Academy

View all →