The one optic you need for multiple situations is a SIG SAUER® ROMEO4 H Red Dot Sight. Designed for use on modern semi-automatic handguns, MSR platforms or shotgun for fast acquisition on moving targets or tactical advantages in close quarters. SPECTRACOAT ultra-wide broadband, anti-reflection lens coating reduces surface reflections to extremely low levels for superior light transmission. MOTAC motion sensing technology adds to the extended battery life (50,000+ hours) by powering up the sight upon movement and shutting down when idle for two minutes. Four integrated reticle options use an ultra-efficient red LED illumination for excellent visibility in daylight settings. Unlimited eye relief puts you in a both eyes open situational advantage for speed and targeting. The durable aircraft-grade CNC aluminum housing is IPX-7 rated for waterproof and fogproof performance.