Rugged dependability meets streamlined design with the all-new ROMEO-X Enclosed pistol red dot from SIG SAUER. Leveraging SIG’s experience developing durable red-dot technologies trusted by militaries around the world the ROMEO-X Enclosed optimizes strength and reliability for the concealed environment. – Featuring a rugged 7075 aluminum housing with a fully enclosed sealed and Argon-purged optical system the ROMEO-X Enclosed creates a rock-solid distortion free aiming solution for the most demanding shooters and circumstances. – Equipped with a side-mounted battery compartment and SIG SAUER’s patent-pending beryllium copper flexure system the ROMEO-X Enclosed’s deck height is the lowest in the industry allowing for effortless co-witness with standard height irons and is available in both PRO and COMPACT standardized footprints. – Building up SIG SAUER’s DNA of trusted military innovation the ROMEO-X Enclosed delivers streamlined dependability without compromise. – ROMEO-X Enclosed. Where X marks the dot. – Fully enclosed sealed and Argon-purged optical system. – Inspired by MIL-SPEC ROMEO-M17 – Rugged 7075 aluminum housing – Patent-Pending Beyllium Copper Flexure Arm. – Distortion free aspherical lens. – MOTAC (Motion Activated Illumination) – Available Reticles: 3 MOA Red Dot 6 MOA Red Dot or Circle Dot. – Low deck height for standard-height iron sight co-witness. – 20000 hour battery life with side load battery. – 15 illumination settings including 3 night vision. – Assembled in U.S.A.