Collimator Primary Arms SLx MD-21 21mm Micro Dot AutoLive ACSS-CQB Red Dot

Primary Arms GLx MD-21 Micro Dot 21 mm with ACSS-CQB reticle is a red dot device designed for shooters who demand lightning-fast response, uncompromising durability, and modern optical performance. The combination of AutoLive® technology and the innovative ACSS reticle makes every shot a conscious decision — precise, fast, and confident.

Primary Arms GLx MD-21 – Features

• AutoLive® Technology – automatically activates when motion is detected.
• Low Battery Indicator – power control always at hand.
• ACSS-CQB Reticle – fast and accurate aiming at various distances.
• Compact Micro Dot – compatible with standard Micro mounts.
• Anodized Aluminum Housing – resistant to shocks, corrosion, and weather conditions.
• IP67 Protection Rating – waterproof, dustproof, and fog-resistant.
• Low-profile turrets with high/low position indicator.
• Night Vision Compatible – ready for nighttime use.
• Left-side Controls – intuitive and quick adjustment.
• Power Supply: CR2032 battery (included) – long operational time.
• Lifetime Warranty – reliability for years to come.

AutoLive® – a device that thinks for you

Thanks to the automatic activation feature when motion is detected, the device is ready for action exactly when you need it. When not in use, it enters sleep mode to conserve battery power without your intervention.

Reliability in all conditions – IP67 and excellent image quality

The GLx MD-21 is built to perform in extreme environments. With an IP67 waterproof rating, it easily withstands rain, dust, and mud.

The ACSS-CQB reticle in this model enables both lightning-fast target acquisition at close range and precise shooting at long distances. Thanks to its fully multi-coated anti-reflective lens, the image remains bright, sharp, and detailed, while night vision compatibility expands tactical versatility.

Primary Arms GLx MD-21 – one device, total control

Primary Arms GLx MD-21 is an advanced device for professionals and enthusiasts who value precision, durability, and versatility. Whether you’re at the range, in the woods, or in a tactical scenario – it’s equipment you can rely on.