ARO-CORE (Advanced Rifle Optic Core) is an evolution of the popular 20mm 403 and 503 series optics, delivering enhanced performance in a refined 22mm housing. Designed to pair seamlessly with magnifier systems, ARO-CORE features a 1.63" lower 1/3 co-witness pedestal mount for optimal alignment on modern sporting rifles. Available as a 2 MOA dot only or with the Multi-Reticle System (MRS) in Red, Green, or Gold, this optic offers flexibility for a wide range of shooting applications. Product Features 22mm housing design compatible with magnifier systems Multi-Reticle System (MRS): 65 MOA circle & 2 MOA dot, 2 MOA dot, or 65 MOA circle Available reticle colors: Red, Green, or Gold Shake Awake technology with last setting recall Up to 50,000 hours of battery life Lower 1/3 co-witness pedestal mount (1.63") Compact and lightweight design Product Details Model: ARO-CORE-MRS-GR Housing Size: 22mm Reticle Options: 2 MOA Dot / MRS Battery Life: Up to 50,000 hours Mounts Included: 1.63" and 1.05" In the Box: Optic, two mounts, multi-tool, wrench, cleaning cloth