Holosun He507COMPGR He507Comp-Gr Black Anodized 1.1 X 0.87 CRS Reticle Green 507Comp-Gr Handgun Sight features a Large 1.1 X 0.87 Objective Lens For Enhanced Shooting Performance And Holosuns New Competition Reticle System (CRS) With Holosuns 540Nm Green Super Led And Up To 50K Hour Battery Life With a 1632 Cell.CRS Is An Enhanced Multi-Reticle System With Four Components including a Precision 2MOA Dot, An 8MOA Circle, 20MOA Circle, And 32MOA Circle With Multiple Combination settings To Suit Individual Shooter Preference. 507Comp-Gr Is Made From 7075 Aluminum With An Industry Standard Footprint, And Includes Shake Awake Technology. Magnification: 1X Objective: 1.1" X 0.87" Eye Relief: Unlimited Dot Size: 2 MOA Dot/8 MOA/20 MOA/32 MOA Circle Length: 1.80" Weight: 1.70 Oz Battery Size: Cr1632 Reticle: Competition Reticle System (CRS) Green Adjustment Size: 1.0 MOA Proofs: IP67 Waterproof Optic Coating: Multi-Coated Windage Elevation: Adjustable