The 507-PROMAX-GR-PRS delivers maximum visibility and speed with a high-contrast green reticle, an enlarged viewing window, and a forward-leaning sunshade designed to reduce glare in bright conditions. Built around Holosun's Performance Reticle System, it provides flexible reticle options to match both speed-driven and precision-focused shooting styles. a ' Performance Reticle System Selectable 2 MOA dot with 8 MOA, 20 MOA, or 32 MOA circle options for precision aiming or rapid target acquisition. a ' High-Visibility Green Reticle High-contrast green reticle designed for faster visual pickup in bright environments and complex backgrounds. a ' Expanded Viewing Window with Sunshade Large viewing area with integrated forward-leaning sunshade reduces glare and improves sight tracking. a ' Solar Failsafe with Shake Awake Solar backup and motion activation keep the optic ready while conserving battery life. a ' Side-Loading CR1632 Battery Battery replacement without removing the optic from the slide.