AIM-O M21 Self-Illuminated Reflex Red Dot Sight

M21 dot.
Lens diameter 30mm.
Fast acquisition of the target.
Material: ALUMINUM.
Color: BLACK/DARK EARTH.
RDS color: RED.
Pattern designed to be visible in all conditions.
It works in all weather and temperature conditions.
Unique shape it absorbs shocks and deflects the stress away from the lenses.
Auto-lighting adapts to ambient light.
Calibration Settings.
1x magnification.
Attack fast 20mm standard.
Weight: 160gr.
Product Dimensions: 4.5x2x2.8 inches.
Anti-reflective lenses.
Operation 2x LR44 batteries & auto lighting.
Cover red dot included in rubber.
Coating of the multi-layer lens.
Waterproof, anti-fog.
Anti-reflective, scratch-resistant surfaces.