TacFire Mini Micro Dual Illuminated Red & Green Dot Sight With Low Profile Picatinny Mount & Quick Detach Riser Mount TacFire official product, Mini micro Red dot sight with low profile Picatinny mount & additional quick detach 3/4 inch riser Constructed of durable T6 6061 aircraft grade aluminum One low profile Picatinny/Weaver base mount Multi-coated & Scratch resistant lens to provide high quality light transfer, for best clarity Magnification: 1x, objective: 20mm, eye relief: unlimited, click value at 100 yds: 1/2 MOA, dot size: 4 MOA, reticle: dot, lens coating: multi-coated, battery: CR2032, length: 2.75 inch , net weight: 6.5 oz