MAK Optics Makstorm 4x30i HD Prismatic Sight. The HD optical system with abrasion-resistant coatings has 88percent daylight transmission the highest value ever achieved for optics in this class. Specifications for MAK Optics Makstorm 4x30i HD Prismatic Sight: Manufacturer: MAK Optics Fabric/Material: 7075 T6 Aluminium Magnification: 4 x Objective Lens Diameter: 30 mm Adjustment Type: MOA Emitter Type: Enclosed Battery Type: Lithium Metal CR2032 Length: 20 mm Weight: 400 g Red Dot Sights-Footprint: Not Applicable Mount Type: Picatinny Gun Rail: Picatinny Features of MAK Optics Makstorm 4x30i HD Prismatic Sight Engineered and optimized for high performance with the highest quality lenses. Designed to fit for both 5.56 and 7.62 ammunition. The improved optical prism system enables a short and compact design. Package Contents: MAK Optics Makstorm 4x30i HD Prismatic Sight Battery Manuel Instruction Lense Cloth Allen Key Fork Wrench MAK Optics 254003001: Makstorm 4x30i HD Prismatic Sight