Holosun MP3X 3x24mm Prismatic Red Dot Sight Black. MP3X features a 7075-aluminum housing with a prism optical system to produce a brilliant sight picture. The MP3X reticle is etched astigmatism-friendly and illuminated with both red and green and features BDC holdovers with ranging functionality. Specifications for Holosun MP3X 3x24mm Prismatic Red Dot Sight: Manufacturer: Holosun Color: Black Magnification: 3 x Objective Lens Diameter: 24 mm Battery Type: Lithium Metal CR2032 Red Dot Sights-Footprint: Not Applicable Package Contents: Holosun MP3X 3x24mm Prismatic Red Dot Sight Holosun MP3X-BDC: MP3X 3x24mm Prismatic Red Dot Sight Black