Developed in collaboration with Team SIG captain, Max Michel, the Sig Sauer® ROMEO3MAX 1x30mm 6MOA Open-Reflex Sight features a CNC-machined, aircraft aluminum housing with precision-molded aspheric lens technology, designed to eliminate aberration, reduce weight, and provide more focused images for superior optical performance. The high transmittance red notch reflector delivers unmatched brightness and maximizes light transmission, while LensArmor™ coatings easily shed dirt, mud, dust, and water, and guard against scratches and cracks. SpectraCoat™ coatings further enhance color fidelity and light transmission for optimal clarity. What’s more, MOTAC™ (Motion Activated Illumination System) technology automatically activates the 6 MOA illuminated red dot reticle when it senses motion, and powers down the unit when the weapon is idle for reliable battery preservation. 12 user-selectable brightness settings (10 daylight; 2 night vision) ensure reliable visibility in all lighting conditions. The Truhold™ lockless zeroing system utilizes twin adjustment springs designed to withstand punishing recoil and deliver a quick return to zero, shot after shot. Plus, the side-loading battery compartment makes it easy to replace the CR2032 battery (included) without removing the sight or affecting zero. IPX7 waterproof and fogproof. 20,000-hour battery life. Includes low-profile 1913 Picatinny mount.