Primary Arms GLx MD-21S 21 mm Micro Dot AutoLive 2 MOA Red Dot Sight (Primary Arms, SKU: PA-GLX-MD-21S; MPN: 810025) is a compact sight with a red 2 MOA dot, fully multicoated anti-reflective lenses and side-mounted push-button controls. It offers 12 brightness levels, including 3 for use with night vision. The aluminium housing features a black hardcoat-anodized finish, an IP67 ingress protection rating and fog resistance.
AutoLive automatically puts the illumination to sleep after 2 minutes without movement and restores it when motion is detected. The Solar Failsafe system uses the solar panel to power the sight in sufficient light; when there is insufficient energy from light, the device uses its CR2032 battery. A low-battery indicator makes it easier to monitor the power supply.
• red 2 MOA dot
• brightness adjustable across 12 levels, including 3 night vision settings
• motion-activated AutoLive with sleep mode after 2 minutes without movement
• solar panel with Solar Failsafe that reduces battery consumption in suitable lighting
• fully multicoated anti-reflective lenses (FMC)
• left-side push-button controls and a low-battery indicator
• ingress protection rated IP67, fog resistance and shock resistance
• compatibility with the Aimpoint Micro / Standard Microdot mounting footprint
• low mount and raised mount with a spacer included
• red dot sight: Primary Arms GLx MD-21S with a red 2 MOA dot
• battery: CR2032 3 V
• low Picatinny rail mount
• raised Picatinny rail mount, Absolute Cowitness
• spacer for the raised mount
• manufacturer: Primary Arms
• series: GLx
• manufacturer's SKU: PA-GLX-MD-21S
• manufacturer part number (MPN): 810025
• barcode (EAN/UPC): 818500018278
• reticle: 2 MOA dot
• illumination colour: red
• objective clear aperture: 20 mm
• brightness levels: 12, including 3 for night vision
• power-saving system: AutoLive, with sleep mode after 2 minutes without movement and wake-up on motion detection
• battery power: 1 × CR2032 3 V
• additional power source: Solar Failsafe solar panel
• low-battery indicator: yes
• adjustment click value: 0.5 MOA
• total elevation adjustment range: 100 MOA
• total windage adjustment range: 100 MOA
• sight mounting footprint: Aimpoint Micro / Standard Microdot
• rail standard for the included mounts: M1913 Picatinny
• optical centreline heights with the raised mount, depending on spacer use: 1.41" or 1.535" (approximately 35.8 mm or 39.0 mm)
• lens coatings: fully multicoated anti-reflective (FMC)
• housing material: aluminium
• finish: hardcoat anodizing
• housing colour: black
• ingress protection rating: IP67
• fog resistance: yes
• length: approximately 71.1 mm
• weight: approximately 142 g
• warranty: manufacturer's limited lifetime warranty, subject to its terms
The GLx MD-21S combines a simple 2 MOA aiming dot with automatic power saving and a set of mounts that allows a choice of sight mounting height.
