NEW ! Primary Arms GLx MD-21s

Published on April 9, 2025
Duration: 11:48

This video reviews the Primary Arms GLx MD-21 red dot sight, highlighting its ACSS CQB reticle, solar backup, and AutoLive technology. The reviewer demonstrates its durability through a rigorous water bottle test, confirming its robust construction and reliable performance. It's presented as a versatile optic suitable for various calibers and applications, particularly for 300 Blackout with subsonic ammunition.

Quick Summary

The Primary Arms GLx MD-21 red dot sight features a solar panel backup, AutoLive technology for automatic power management, and the versatile ACSS CQB reticle with selectable aiming patterns and ballistic compensation. It demonstrated exceptional durability in a water bottle impact test, maintaining zero and functionality.

Frequently Asked Questions

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

The GLx MD-21 boasts a solar panel backup for extended battery life, AutoLive technology for automatic on/off, and the versatile ACSS CQB reticle with multiple configurations. It also features a durable construction with an IPX67 waterproof rating and protected turrets.

How durable is the Primary Arms GLx MD-21 red dot sight?

The GLx MD-21 proved highly durable in a rigorous water bottle test, withstanding multiple impacts without shifting zero, losing clarity, or damaging the solar panel. This indicates robust construction suitable for demanding conditions.

What is the ACSS CQB reticle and what are its benefits?

The ACSS CQB reticle offers four selectable aiming patterns (full, circle/chevron, chevron/dots, chevron only) and integrates bullet drop compensation and ranging capabilities. This makes it adaptable for various calibers and shooting distances.

What is the price difference between the Primary Arms SLX and GLx red dots?

The SLX red dot starts at $159.99 for the base model and goes up to $200 with the ACSS reticle. The GLx lineup begins at $199 for the base model and is $219 with the ACSS reticle, reflecting its additional features like the solar panel.

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