For AR and carbine shooters, Burris offers a complete package with the new Burris AR-F3 Flattop FastFire Sight. This bundles a FastFire III with 3 MOA dot and rugged protective mount that&';s range-ready right out of the box. It&';s the simplest and most effective way to mount the FastFire III on an AR flattop as a stand-alone sight or as a co-witness for your iron sights. The FastFire Flattop Sight sits low in the mount and a pair of metal wings on each side of the lenses protects the sight from impact or unintentional abuse. For added convenience, there is a lower compartment in these Burris Red Dot Sights for spare battery storage, open-end wrench and TorxR wrench. The Burris Flattop Fast Fire Sight fits any Weaver or Picatinny-style base. Specifications for Burris AR-F3 Flattop FastFire Sight: Color: Black Magnification: 1 x Objective Lens Diameter: 32 mm Reticle: 3 MOA Attachment/Mount Type: Weaver Magnification Type: Fixed Features of Burris AR-F3 Flattop FastFire Sight Clear Objective Diameter: 21x15mm Reticle: 3 MOA Dot Reticle Color(s): Red Mount: Picatinny Rail Base Eye Relief: Unlimited Click Value: 1 MOA Elevation Adjustment, Total Capability: 115 MOA Windage Adjustment, Total Capability: 86 MOA Parallax/Focus: Parallax-Free Length: 2 in. Weight: 4.60 oz Battery: CR1632 WARNING: California`s Proposition 65