Primary Arms Red Dots Worth the $$$?

Published on December 22, 2025
Duration: 0:52

Elliott Delp provides an expert review of the Primary Arms GLx MD-21S red dot sight, highlighting its consistent clarity and the versatile ACSS CQB reticle. The review emphasizes the optic's modularity, allowing users to customize reticle displays (chevron, BDC, horseshoe, or combinations) to suit different shooting needs, from close-quarters to longer ranges.

Quick Summary

The Primary Arms GLx MD-21S red dot sight features the versatile ACSS CQB reticle, offering a 2 MOA dot, chevron, horseshoe, and BDC elements. Its modular reticle settings allow users to select specific components for display, adapting the aiming solution for various shooting scenarios.

Chapters

  1. 00:00Introduction: Primary Arms GLx MD-21S
  2. 00:21ACSS CQB Reticle Features
  3. 00:34Reticle Modularity and Customization

Frequently Asked Questions

What are the key features of the Primary Arms GLx MD-21S red dot sight?

The GLx MD-21S features a consistent clarity across Primary Arms optics and utilizes the versatile ACSS CQB reticle. It offers modular reticle settings, allowing users to choose between the chevron, horseshoe, BDC, or combinations thereof for adaptable aiming.

What reticle system does the Primary Arms GLx MD-21S use, and what are its components?

It uses the ACSS CQB reticle system. This system includes a 2 MOA dot, a chevron for precise aiming, a horseshoe for rapid target acquisition, and Bullet Drop Compensator (BDC) elements for range estimation and holdovers.

Can the reticle on the Primary Arms GLx MD-21S be customized?

Yes, the GLx MD-21S features modular reticle settings. Users can select specific components to display, such as just the chevron, just the BDC, the chevron with the horseshoe, or all elements together, tailoring it to their preference.

What is the general assessment of Primary Arms optics clarity?

According to Elliott Delp, the clarity of Primary Arms optics is universally consistent and spot-on across all their product lines, indicating a high standard of optical quality regardless of the specific model.

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