The classic 1911 has joined the Red Dot Revolution with the introduction of the 1911-X from SIG SAUER. A balance of classic engineering and style with modern upgrades. Featuring an ultra-low-profile direct-mount optic capability; XRAY3 Day/Night sights; adjustable flat blade trigger; custom G10 grip panels from LOK grips; railed stainless steel frame with undercut trigger guard extended ambidextrous manual safety and slide stop and a removable metal magwell. The 1911-X ROMEO-X models feature a factory installed ROMEO-X red-dot sight from SIG SAUER Electro-Optics; the optics is 7075 aircraft-grade alloy featuring machined anti-reflection grooves on shooter-facing surfaces with distortion-free aspheric glass and a patent-pending Beryllium Copper flexure-arm adjustment system. The ROMEO-X incorporates a high-efficiency point source red LED emitter with 2 MOA dot/32 MOA circle reticle side independent brightness adjustment buttons 15 brightness settings including night vision settings and a side-mounted CR1632 battery compartment with a threaded battery cap so the optic does not need to be removed from the pistol for battery changes. Additionally the ROMEO-X offers a low deck height for standard-height iron sight co-witness has a minimum continuous runtime of 20 000 hours at medium brightness setting and utilizes MOTAC (Motion Activated Illumination) MAGNETAC (Magnetic Activation) and D.A.R.C (Dark Adaptive Reticles & Coatings) technologies.