P320-M18 9MM 3.9" SLIDE ASSEMBLY, ROMEO-M17, COYOTE
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$999.99
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Jan 21, 2026
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Now is the time to enhance your P320 with the U.S. Military's official sidearm slide and optic assembly, available only at the SIG SAUER webstore. Easily equip your P320 with the factory-mounted, American-built ROMEO-M17 featuring SIG SAUER's proprietary SIG-LOC mounting system. The ROMEO-M17 boasts a fully enclosed, sealed, and purged optical system for ultimate protection against all elements. Its low deck height allows for absolute co-witness with the already installed standard-height sights. With 15 brightness settings, including 3 optimized for GEN 3+ Night Vision, you enjoy exceptional adjustability to your preference, with 3 options of reticle display: circle only, dot only, or a circle/dot combination. Powered by a single side-mounted CR2032 battery, the ROMEO-M17 is designed to function for 50,000 hours before needing a replacement.The U.S. Military selected this optic for its advanced technology, which includes MOTAC (Motion Activated Illumination), MAGNETAC (Magnetic Activation), and D.A.R.C. (Dark Adaptive Reticles & Coatings).Available exclusively at the SIG SAUER webstore, this slide allows P320 Carry & Compact owners to easily swap their existing slide configuration for this world-renowned slide and optic assembly.To learn more about the M17 & M18 pistols CLICK HERETo learn more about the ROMEO-M17 CLICK HEREM18 & ROMEO-M17 Slide Assembly Features:Easy slide assembly swap, no tools required.Factory-mounted ROMEO-M17 Reflex Sight.Compatible with Fire Control Units (FCUs) with and without a manual safety.Loaded Chamber Indicator (LCI)Barrel Compatibility: 3.9" 9MM barrel.Includes factory-installed SIGLITE front and sights.Finish: Coyote PVD*Note: only for use on 9mm/ .357SIG / .40S&W fire control units (FCU). It will not function with a .45 ACP or 10MM FCU. Will not work on the following SKUs: M17-COMMEMORATIVE, M17-EMP & M17-EMP-10ROMEO-M17 FEATURES INCLUDEA fully enclosed, sealed, and purged optical system, for ultimate protection from the elementsMounts from underneath the pistol slide, re-using the MHS pistol rear sight block and sight block screw7075 Aluminum housingIntegrated gas deflector on the front of the housingMachined anti-reflection grooves on all rear surfaces for reduced glareExtremely low deck height, allowing a full sight picture and co-witness with standard-height sightsSIG-LOC(TM) (SIG Leverage Optimizing Connection) proprietary mounting interface, for the ultimate optic/pistol lockup.A high-efficiency point source LED emitter, with 2 MOA dot/32 MOA circle reticle. The reticles are independently selectable (circle only, dot only, or circle/dot combination).Independent brightness adjustment buttons that are recessed within a protective plate which can be activated even with gloves on. Buttons have bump features above UP and below DOWN, so they can be determined by feel.15 brightness settings, with 3 of the settings optimized for use with Gen 3+ NV devicesA side-mounted CR2032 battery compartment with a threaded battery cap, for easy battery changes without the need to remove the optic from the firearm. Minimum continuous runtime of 50,000 hours, at medium brightness setting2 drainage holes machined in the sides of the housing, just behind the rear sealed window, to allow pooled liquid to escape when the optic goes from a vertical position (such as in a holster) to a horizontal position (such as shooting)Windage and elevation adjustments have tactile clicks. Adjustment screws are slotted, for use with any small flat-blade tool. Adjustment resolution is 1.5 MOA per click.MOTAC (Motion Activated Illumination)MAGNETAC (Magnetic Activation)D.A.R.C. (Dark Adaptive Reticles & Coatings)Designed, developed, tested and fully assembled in the USA
