The 507Comp is a compact open-reflex sight from Holosun designed for pistol competition and micro-platform use where a low, lightweight optic is required. The unit combines Holosun’s Multi-Reticle System with a sealed metal housing and user-accessible battery tray to simplify maintenance and extend operational readiness.

Power management pairs a sliding CR1632 battery tray with an internal solar-assist and Shake Awake motion sensor to maximize battery life. Optically the 507Comp offers a selectable 2 MOA dot, a 32 MOA circle, or a combined dot-and-circle reticle, multi-coated glass, unlimited eye relief, and parallax-free performance at typical engagement distances. The housing accepts common optic mounting plates (RMR-footprint compatibility) for direct mounting to optic-ready pistol slides.

Specifications

• Manufacturer: Holosun

• Model: 507Comp

• Reticle: 2 MOA dot, 32 MOA circle, or combined dot-and-circle

• Reticle Color: Red

• Body Material: 7075-T6 aluminum

• Finish: Hardcoat anodized

• Power: CR1632 battery with solar assist

• Battery Life: ~50,000 hours

• Controls: Multi-step brightness settings, Shake Awake motion sensor, solar failsafe

• Footprint: RMR-style footprint

• Lens: Multi-coated glass

• Night Vision: NV compatible

• Weight: ~1.5 oz (approx.)