The Romeo-X Enclosed pistol red-dot from Sig Sauer combines rugged dependability with a sleek, streamlined deSign. Drawing from Sig's extensive experience in developing red-dot technologies trusted by armed forces around the world, the Romeo-X Enclosed is built for strength and reliability, particularly in concealed environments. With its robust CNC 7075 aluminum housing and aspherical glass lens system, along with a high-efficiency point source emitter, it offers a rock-solid, distortion-free aiming solution, even in demanding conditions. Featuring a side-mounted battery compartment and Sig Sauer's innovative, patent-pending beryllium copper flexure system, the Romeo-X Enclosed's ultra-low deck height allows effortless co-witnessing with standard height iron Sights. Available in both Pro and Compact standardized footprints, it embodies Sig Sauer's legacy of trusted military innovation, delivering dependability and performance without compromise. PSA is your headquarters for buying SIG Romeo optics online at great prices.