Sightmark's wolverine fsr red dot sight is specifically built for the ar platform.The rugged wolverine line of sights from sightmark delivers unlimited eye relief and first-class battery life using just a single aa battery in a durable shockproof design.It is housed in a single piece of 6061-t6 aluminum that is rubber-armored and protected by a scratch resistantanti-reflective lens coating.Fog proof and nitrogen purged the wolverine sight is designed to provide shooters the ability to take aim in a variety of conditions and temperatures ranging from -22 to 122 f.It has an adjustable mount height and are compatible with picatinny mounts.Battery: AAMagnification: 1xObjective: 28mmEye Relief: UnlimitedDot Size: 2 MOALength: 4.40"Weight: 12.30 ozFinish: Black MatteReticle: Illuminated Red DotAdjustment Size: .5 MOAProofs: Waterproof/Fogproof/ShockproofOptic Coating: AR RedWindage Elevation: 120 MOA