Holosun HE515CT-GR 1x 20mm Green Dot - 2 MOA Dot & 65 MOA Circle - The HE515CT-GR is a 20mm micro optical sight designed for rifle and carbine applications. Features include a Titanium Housing, Solar Failsafe, Shake Awake, 12 brightness settings, Holosun's Green Super LED with up to 50k hours battery life, Multi-Reticle System, QD mount, Kill flash, and Clear Lens Caps. Green MRS: 2 MOA Dot; 2 MOA Dot & 65 MOA Circle Up to 50,000 Hours Battery Life (Setting 6) 12 Brightness Setting: 10 DL & 2 NV Compatible Tray Battery Compartment & Titanium Housing Parallax-free & Unlimited Eye Relief Quick Release & Detachable Mount