Sightmark Mini Shot A-Spec M2 Red Dots Matte Black 23x16mm 1 MOA/5MOA Red Dot Reticle. The Mini A-Spec features 9 reticle brightness settings ambidextrous digital brightness controls permit the A-Spec to be used in virtually any environment from sunny days to low-light conditions coated and scratch-resistant lens IP67 waterproof rating and are both shockproof and dustproof. Specifications for Sightmark SM26047 Mini Shot A-Spec M2 Red Dots Matte Black 23x16mm 1 MOA/5MOA Re: Manufacturer: SightMark Color: Matte Black Magnification: 1 x Reticle: Dual Illuminated Red Eye Relief: Unlimited Adjustment Click Value: 1 MOA Emitter Type: Open Optical Coating: Fully Multi-Coated AR Red Battery Type: CR2032 Water Resistance Level: IP67 Shockproof: Yes Length: 1.78 in Additional Features: Variable Field of View 23 x 16 mm Objective Red Dot Sights-Footprint: Not Applicable Adjustability: Adjustable Sightmark SM26047 Mini Shot A-Spec M2 Red Dots Matte Black 23x16mm 1 MOA/5MOA Re