The Sig Sauer ROMEO8T is designed to perform in the most severe conditions, this reflex sight is ideal for rapid target acquisition. Designed for modern MSR platforms and shotguns- Comes standard with solid lens covers and 1/2 hex bolt mount- Ballistic Circle-Dot reticle options- Users can select from 4 different integrated reticle options (Dot, Circle-Dot, Dot with Holds, Circle-Dot with Holds)- 100,000+ hour battery life and the readily available CR123A battery is side loading for quick battery replacement.- Unlimited eye relief to acquire aiming point and target, regardless of eye position behind sight.- MOTAC (Motion Activated Illumination) powers up or down when sensing motion- Uses an ultra-efficient red LED illumination for daylight visibility and extended runtime- 1.535" Mount Height- Strong, lightweight aircraft-grade 7075-T6 aluminum housing- Waterproof, IPX-8 rated, and fog-proof.- Removable Titanium Shroud for ultimate optic protection from drops and bumps Sig Sauer ROMEO8T Ballistic Circle Dot, 0.5 MOA Adj, FDE Red Dot Sight SOR81003