The Primary Arms GLx MD-21S 21mm Micro Dot AutoLive ACSS-CQB Red Dot Sight (SKU: PA-GLX-MD-21S-ACSS) is a compact 21mm micro dot sight featuring an ACSS-CQB reticle for quick targeting at close range and precise fire at longer distances. Built-in AutoLive® technology automatically activates the illumination upon motion detection, while an integrated solar panel provides power in critical situations. The rugged, anodized aluminum housing is shock-, water-, and dust-resistant (IP67 rating), and night vision compatibility expands nighttime use.

Key features

• ACSS-CQB reticle – quick target acquisition at short range and precision at longer distances
• AutoLive® technology – automatic switching on when motion is detected and energy-saving mode when in sleep mode
• upper solar panel – power support in critical situations
• low battery indicator
• multi-layer anti-reflective coatings – bright and contrasting image
• night vision compatibility
• Micro Dot compact design – compatible with standard Micro mounts
• anodized aluminum housing – resistance to corrosion, shocks and weather conditions
• IP67 resistance class – waterproof, dustproof, fog-proof
• low-profile turrets with adjustment direction markings
• intuitive operation with buttons on the left side

Set components

• Primary Arms GLx MD-21S 21 mm Micro Dot AutoLive ACSS-CQB collimator
• CR2032 battery
• lens covers
• manufacturer's documentation

Technical parameters

• lens diameter: 21 mm
• mesh type: ACSS-CQB
• backlight color: red
• maximum vertical adjustment: 100 MOA
• maximum horizontal adjustment: 100 MOA
• power supply: 1 × CR2032
• weight: 141 g
• housing material: aluminum
• resistance class: IP67
• night vision compatible: yes
• warranty: lifetime manufacturer Primary Arms
• manufacturer: Primary Arms, USA