The Sig Sauer Romeo-X SIG-LOC Compact 3 MOA Red Dot (brand part no. SORX1630) is a fully enclosed, sealed pistol red dot with a 3 MOA red dot reticle, built exclusively for SIG-LOC optic-ready P365 slides. Sig machines the housing from 7075 aluminum around a sealed, argon-purged optical system with a distortion-free aspherical glass lens. The battery loads from the side, so changing it never disturbs your zero, and MOTAC motion activation stretches a single CR1632 to a rated 20,000 hours. The deck height is low enough for absolute co-witness with standard-height iron sights. It mounts from underneath the slide with Sig’s SIG-LOC system, five points of contact for zero retention. For a carry or duty pistol that needs a rugged dot from the maker’s own line, it is a straightforward choice.

Key Specifications

• The reticle is a 3 MOA red dot.
• The optical system is fully enclosed, sealed and argon-purged.
• The housing is 7075 aluminum.
• The footprint is SIG-LOC Compact, mounted from underneath the slide.
• The battery is a side-loading CR1632, so it changes without re-zeroing.
• MOTAC motion activation gives a rated 20,000 hours of runtime.
• The deck is low for absolute co-witness with standard-height iron sights.
• Height is 0.94 inches, length 1.67 inches and width 1.20 inches, with a 24 mm objective lens.
• The glass is a distortion-free aspherical lens; Sig lists ALT, LensArmor, MOTAC, SpectraCoat, MAGNETAC, D.A.R.C and SIG-LOC among its technologies.
• It is backed by Sig’s Infinite Guarantee.

Frequently Asked Questions

Which pistols does it fit? Sig designed it exclusively for SIG-LOC optic-ready P365 slides. It mounts from underneath the slide with the SIG-LOC system, which gives five points of contact, so it does not fit other footprints.

How long does the battery last? Sig rates the MOTAC motion-activated illumination for 20,000 hours of runtime, and the CR1632 battery loads from the side so you can replace it without re-zeroing.

What reticle does it have? It has a 3 MOA red dot reticle, per Sig’s ROMEO-X SIG-LOC Compact.

Buy the Sig Sauer Romeo-X SIG-LOC Compact 3 MOA Red Dot

A dot built by the pistol’s own maker is a simple, durable upgrade. Browse our red dot sights and order from our Lubbock, Texas gun shop for fast, insured shipping.