The Sig Sauer Romeo5 Gen II Elite Red Dot Sight - SOR5105 takes the already dependable ROMEO5 and improves upon it. Featuring an upgraded ruggedized industrial design and multi-coated high-performance Mangin lens, the ROMEO5 GEN II Elite comes with either a standard I-Beam mount or 1.93 I-Beam mount to suit your particular needs.Features :Ruggedized Industrial DesignUpdated High-Performance Mangin Lens For Unrivaled ClarityParallax-Free Optical DesignQuad Ballistic Circle Dot 2.0Standard I-BEAM Mount for Maximizing Situational Awareness12 Settings (10 Day, 2 NV)40,000 Hours Runtime with CR2032 Battery and MOTACTop Mount Illumination ControlsDependable IPx7 Waterproof and Fog-Proof Performance