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SIG SAUER raises the bar again with the ROMEO-X SIG-LOC PRO, a pistol red dot engineered for maximum strength, minimal distortion, and rock-solid repeatability. At the heart of this optic is the SIG-LOC (Leverage Optimized Connection) mounting system — an industry-first footprint that locks the optic to the slide with five contact points, virtually eliminating shift in zero from heavy recoil or harsh impacts. If you want a micro-red dot built to perform under real world stress, the ROMEO-X is purpose-made.

Why SIG-LOC Matters

Traditional top-mount footprints rely on fewer contact points and can be susceptible to shock-induced movement over time. SIG-LOC’s innovative bottom-mounted design creates five points of contact between the optic and slide for the strongest lockup in the industry. The result: dramatically improved repeatability, less parallax, and a crisper reticle—features that matter most when every split second counts.

Performance & Optical Quality

The ROMEO-X pairs rugged engineering with high-end optics. A longer focal length reduces parallax and reticle distortion, delivering a forgiving, natural sight picture that’s quick to index in high-stress scenarios. The enclosed optical system is housed in 7075-T6 aluminum for strength and sealed against the elements, while the distortion-free aspherical glass lens and multi-setting illumination ensure clarity in nearly any lighting condition.

Smart, Practical Features

• MOTAC (Motion Activated Illumination): Powers the dot on with movement and powers down when idle to preserve battery.

• Side-load battery tray: Replace the CR2032 without removing the sight—easy and fast.

• Industry-low deck height: Designed to co-witness with standard-height iron sights for immediate backup.

• Long battery life: Up to 20,000 hours at moderate settings.

• 15 illumination settings: Twelve daylight settings plus 3 dedicated night-vision levels for compatibility with NV devices.

• IPX8 waterproofing: Built to perform in the wettest conditions.

• Assembled in the USA and backed by SIG SAUER’s Infinite Guarantee.

Built for Real Use

Whether you run a SIG slide with the SIG-LOC footprint, are building a dedicated carry pistol, or want the absolute best lockup and optical fidelity for competition or duty use, the ROMEO-X is built around one simple promise: no surprises. Its bottom-mount geometry and reinforced contacts mean you can count on the same zero after thousands of rounds and the harshest handling.

Specifications Snapshot

• Model: ROMEO-X SIG-LOC PRO (SORX1560)

• Footprint: SIG-LOC PRO

• Reticle: 6 MOA Red Dot

• Magnification: 1x

• Objective Lens Diameter: 24 mm

• Overall Length: 1.9 in (48.26 mm)

• Overall Width: 1.24 in (31.50 mm)

• Height: 0.96 in (24.38 mm)

• Illumination Settings: 15 (12 Day / 3 NV)

• Windage / Elevation Travel: 80 MOA / 40 MOA

• Battery: 1 × CR2032 (side-load) — up to 20,000 hrs runtime

• Waterproofing: IPX-8

• Emitter: Enclosed

• Color / Finish: Black

• Made / Assembled: USA

Final Take

The SIG SAUER ROMEO-X SIG-LOC PRO is more than a red dot — it’s an evolution in mounting technology and optic reliability. For serious competitors, law-enforcement professionals, or anyone who wants a pistol sight they can absolutely trust, ROMEO-X delivers industry-leading lockup, crisp optics, and real-world durability. If you’re building a pistol where zero is sacred, this sight belongs at the top of your short list.

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