SIG XRAY5 Red Dot: 225-Point Digital Zero and SIG NEXT Optics

The XRAY5 debuted at SIG NEXT mounted on the new P385, with the FOXTROT2R LightFight light on the rail. That is the pairing SIG's September 23 homepage teaser showed in distorted form. Our P385 report covers all five P385 models, P320 magazine fit, and the other pistols SIG launched at the event.

SIG's launch material pictures the XRAY5 in COMPACT, SIG-LOC COMPACT, and SIG-LOC PRO versions. The sight is rated 1x24mm, carries a round counter and MOTAC motion activation, and zeroes digitally in seconds through the XRAY5 mobile app.

Most pistol dots zero by physically moving part of the optical system. Turning an adjustment screw shifts an emitter carrier or changes the relationship between the emitter and lens. The springs and threaded parts that hold that setting must survive the slide stopping and changing direction on every shot.

XRAY5 takes a different route. Its 225 LEDs stay fixed in a 15 by 15 grid. A windage or elevation input tells the sight which LED to illuminate, moving the visible 3.5 MOA dot without moving hardware. The same change can be made with the two buttons on the optic or through the app's Digital Zero screen.

That architecture removes the mechanical zeroing assembly as a possible point of failure. It also makes saved zero profiles practical because the sight can return to a known digital coordinate. Real recoil testing will determine whether the complete optic is tougher than established enclosed dots, but its zero no longer depends on a carrier staying in the same physical position.

SIG's production description promises one 3.5 MOA dot. A related patent covers more ambitious patterns and multiple illuminated emitters, but those patent examples are design options, not advertised XRAY5 modes.

The emitter array is only half of the unusual layout. SIG calls the optical system ZDO, short for Zero Distortion Optical System. The LED sends the reticle upward into an aspheric collimator mounted in the roof of the housing. That curved optical surface reflects the collimated dot forward, through a flat front window, and back to the shooter's eye.

A conventional reflex sight normally uses a curved front lens to both collimate and reflect the dot. Looking through that curved element can bend straight lines or change the apparent scale of the scene, especially near the edge. XRAY5 moves the curved element out of the direct sight picture. The shooter looks through a flat front window instead.

SIG's 2026 patent application for a sight with a reflective collimating surface describes the same path: an emitter, a collimator outside the target-viewing path, and a planar transparent window with a reflective coating. The practical promise is a cleaner view with less lens distortion, though optical clarity and parallax still need to be measured on production units.

XRAY5 is not the first XRAY red dot SIG has shown with a digital zero. At SHOT Show 2026 in January, SIG put the XRAY7-CO, a combat optic built for belt-fed machine guns, on the firing line at its range day. GunsAmerica's hands-on coverage describes a sight with no springs, screws, or internal windage and elevation mechanism. Zero changes happen digitally, and the reticle reflects down from a roof-mounted display through flat plate glass.

The XRAY7-CO goes further than the XRAY5 description in three ways. It links to SIG KILO WARP laser rangefinders, over Bluetooth with the 905 LRF or by cable with the WARP 1550, and moves the aiming point to the calculated hold after the shooter ranges a target. It recognizes a flipped-in magnifier, then rescales the reticle and adjusts brightness. Its reticle is defined in firmware, so circle dots, chevrons, text, and data overlays are possible.

The two optics also share a practical feature. XRAY7-CO's ZeroSwitch stores multiple zero profiles so a machine gunner can swap barrels without re-zeroing, the same idea behind XRAY5's saved profiles for different loads. SIG told GunsAmerica that XRAY7-CO was headed to defense customers first, with commercial versions in development and likely scaled down for M4-sized rifles.

Each of those XRAY7-CO jobs already exists in a separate SIG rifle optic. The ROMEO8T-AMR changes its reticle when a magnet in the JULIET3T-AMR magnifier flips into place, and GunsAmerica reports that XRAY7-CO uses the same AMR technology. The ROMEO9T carries a red dot and a green dot with independent zeros, so one sight can hold supersonic and subsonic loads. SIG's BDX system has KILO rangefinders send a firing solution to a Sierra BDX scope, which lights the matching holdover point. XRAY7-CO combines magnifier awareness, multiple zeros, and rangefinder holds in one digital red dot.

SIG describes all four XRAY5 versions as enclosed sights. A rear window seals the optical path, the body is argon purged to resist internal fogging, and the published waterproof rating is IPX8 at 40 meters, or 132 feet.

That matters on a carry or duty pistol because lint, rain, mud, and snow cannot land directly on the emitter. An open-emitter optic can lose its dot when debris blocks the light path between the LED and front lens. An enclosed housing protects that path while still allowing a compact slide-mounted sight.

Every XRAY5 uses a side-loading CR2032 and offers up to 10,000 hours of runtime. Its 15 brightness settings split into 13 daylight and two night-vision levels. Buyers comparing the layout with current options can start with our pistol red dot guide.

SIG says its XRAY5 test program passed more than 100,000 consecutive live-fire rounds, pressurized submersion to 4 ATM or 132 feet, and repeated 8-foot drops onto concrete without failure or loss of zero. Those are manufacturer test claims. Independent production-sample testing still needs to show how the optic holds up across different pistols, ammunition, and long-term carry use.

The first patent family covers the digital adjustment system. U.S. Patent 12,729,934, issued to SIG on September 8, 2026, describes a target sight with an array of individually controlled emitters. Selecting an emitter changes the apparent position of the aiming mark while the array remains stationary.

The patent explains the problem SIG wanted to remove. It describes conventional carrier plates as complex, tolerance-sensitive parts that can wear, break, shift under shock, or produce nonlinear travel and dead adjustment clicks. Selecting another fixed emitter removes that carrier from the zeroing process.

The same filing is broader than the first XRAY5. It covers uneven emitter spacing, several illuminated emitters, alternate reticles, ballistic hold points, mobile control, and even OLED or backlit LCD arrays. SIG's launch description is narrower: one 3.5 MOA dot on a fixed 15x15 LED matrix. Two of those broader ideas are no longer only on paper. SIG demonstrated rangefinder-driven ballistic holds and firmware-defined reticles on the XRAY7-CO machine gun optic at SHOT Show 2026.

The second family covers the roof-collimator layout. International application WO2026072865A1 claims priority to September 26, 2024, was filed on September 25, 2025, and was published on April 2, 2026. Its drawings and abstract place the collimating surface outside the target-viewing path and use a flat transparent window to return the reflected aiming mark to the eye. Together, the two patent families map closely to the two features SIG names Digital Zero and ZDO.

SIG now lists 80 MOA of total elevation travel and 80 MOA of total windage travel. That closes the range question, but not the adjustment-resolution question. The product pages do not give a clean MOA value for one pixel change or one button step.

A 15-position axis and an 80-MOA total range do not prove that the LEDs are spaced evenly or that one control input always moves to the adjacent point. SIG's patent allows uneven emitter spacing, which could keep corrections finer near the center and larger near the edges.

The rest of the main hardware table is now public. The PRO housing measures 1.90 by 1.32 by 1.17 inches and weighs 1.45 ounces with its battery. The COMPACT measures 1.74 by 1.32 by 1.20 inches and weighs 1.35 ounces. Both use a side-loading CR2032, 15 brightness settings, and the same 24mm aperture.

The XRAY5 app turns the digital architecture into something more useful than button-free adjustment. Shooters can save multiple zero profiles, name them, and switch among them. SIG's App Store images show profiles organized by ammunition and distance, which could let one pistol keep separate settings for practice, defensive, or suppressed loads.

The app is already listed for both iPhone and Android. The Android package uses the name com.sigsauer.xray, another sign that the hardware and software were staged together for launch.

The app also exposes brightness, MOTAC motion activation, MAGNETAC, auto-off timing, battery status, control lockout, and Bluetooth settings. The listing shows 15 brightness levels and selectable four, 12, or 16-hour auto-off timers. Bluetooth can be disabled from the optic. More importantly, the sight can still handle power, brightness, windage, elevation, and lockout through its two physical buttons. A phone is an extra control surface, not a requirement for basic operation.

A pistol dot that looks right in a dark room can wash out when a high-output weapon light suddenly paints a pale wall. LightFight addresses that transition by pairing XRAY5 with a compatible FOXTROT light. When the light turns on, the optic raises reticle brightness so the aiming point remains visible against the lit target area.

SIG's launch material confirms the FOXTROT2R LightFight as the paired light. SIG says it sets reticle brightness from the light at the target rather than the ambient light around the optic, which is where conventional auto-brightness sensors struggle. SIG's FAQ describes two LightFight response modes.

The FOXTROT2R LightFight is a 700-lumen, 20,000-candela pistol light that talks to the XRAY5. Turning it on automatically raises XRAY5 reticle brightness. It runs up to 1.5 hours and uses SIG's FLEXCORE dual-fuel system, so it accepts a rechargeable 16340 cell or a CR123A.

Ambidextrous paddles offer momentary, latching, and threshold activation modes, and a four-position sliding rail interface adjusts fit on different pistol rails. Dealer preloads list XRAY5 bundles with this light, shown in the package table below.

XRAY5 also counts firing events through its accelerometer and stores session history in the app. The system needs a five-shot calibration so it can learn the recoil signature of the host pistol and ammunition. The counter can be reset at any time, and SIG says to recalibrate it when the optic moves to another firearm.

That calibration step sets a clear boundary. SIG warns that cycling the slide or bolt during the five-shot sequence may be recorded and reduce accuracy. The counter should be useful for recoil-spring schedules, rental or training-gun maintenance, and optic durability logs. It remains a recoil-event estimate rather than a mechanical record of ammunition passing through the chamber.

SIG's live family page names two top-mounted versions and two underside-mounted SIG-LOC versions. The conventional models attach to common footprint cuts. SIG-LOC places its fasteners below the optic, allowing the housing to sit lower and leaving no screw heads in the sight's top surface.

SIG now lists the conventional Compact at $499.99, the conventional PRO at $549.99, the SIG-LOC Compact at $549.99, and the SIG-LOC PRO at $599.99. Each version has its own SKU and UPC.

Two SIG product pages pair a conventional XRAY5 with the FOXTROT2R LightFight weapon light. SIG assigns a separate package SKU to the PRO and Compact versions.

The biggest news inside that list is the SIG P385. SIG's live XRAY5 page directly names the pistol as a SIG-LOC PRO host. It also confirms XRAY5 support for the P211, including the competition-focused platform covered in our SIG P211 upgrades guide, and a compact version for newer SIG-LOC P365 models.

The footprint name still matters when the conventional PRO and COMPACT models arrive. A DeltaPoint Pro cut and an RMSc cut are not interchangeable, and SIG-LOC is a separate underside-mounted system. Match the exact slide to the exact XRAY5 version rather than choosing by housing size alone. Our parts catalog can help compare current optic options by footprint.

SIG also launched the KILO MICRO rangefinding monocular and the ROMEO5X-AMR combo kit at SIG NEXT 2026. Neither uses the XRAY digital zero, but both extend SIG's connected and magnifier-aware optics lines.

KILO MICRO 4x18mm Monocular

SIG calls the KILO MICRO the world's smallest laser rangefinder. It weighs 3.4 ounces, uses GEN II Lightwave DSP ranging, and reaches 1,000 yards on reflective targets. Eight onboard firearm ballistic groups, Archery Mode, and AMR angle modified range cover rifle and bow use, and a QDI magnetic harness mount comes in the box. Our rangefinder guide compares SIG's current KILO models with Leica, Vortex, and Maven.

The ROMEO5X-AMR Combo Kit pairs a compact rifle red dot with the JULIET3-MICRO AMR 3x magnifier. Automatic Modified Reticle technology switches the Quad Ballistic Circle Dot 2.0 reticle when the magnifier flips into or out of the sight line, the same AMR approach SIG uses on the ROMEO8T-AMR above.

The ROMEO5X-AMR has 15 brightness settings, including three night-vision settings, and runs up to 40,000 hours on one AAA battery with MOTAC. The JULIET3-MICRO AMR uses a push-button flip-to-side mount. Both are aluminum and rated IPX7. For the current ROMEO5 against its main rival, see our Holosun ARO vs. ROMEO5 comparison.

SIG has not announced an XRAY6, and the name here is our placeholder. The gap in the lineup is obvious, though. XRAY5 brings digital zero to a pistol slide, XRAY7-CO brings the full smart feature set to a belt-fed gun, and SIG told GunsAmerica that commercial XRAY7-CO versions would likely be scaled down for M4-sized rifles. A carbine optic between them would not need a new concept. It would be XRAY7-CO technology in something close to a ROMEO8T-sized housing.

Reticles: A display-driven carbine sight could offer a plain dot, a circle-dot, an EOTech-style ring, a chevron, a horseshoe-dot, a configurable BDC ladder, and wind holds, with separate day and night-vision reticle profiles.

Zero profiles: ZeroSwitch-style profiles could cover 5.56 suppressed and unsuppressed, .300 BLK supersonic and subsonic loads, different uppers, or the point-of-impact shift from a clip-on thermal. Because the zero is electronic, each profile could change the aiming point and the entire reticle, BDC, brightness behavior, and ballistic data at once. The ROMEO9T handles two loads with two separately zeroed emitters. A digital sight would not be limited to two.

Laser ranging: XRAY7-CO already shows the operating model. The shooter presses a range button, the rangefinder measures the target, the optic receives the distance, and the displayed aiming point moves to the calculated hold. On a carbine, that means a normal circle-dot up close and a corrected hold on a distant target, with no dialing, no estimating against a fixed BDC, and no separate rangefinder display to read. The first version would most likely keep the rangefinder external, since SIG already has KILO WARP communicating with XRAY7-CO. Building a laser into an 8T-sized housing would add aperture placement, laser-to-optic alignment, battery and heat load, and eye-safety certification to the design problem.

Magnifier integration: Every fixed red dot reticle is a compromise. A large circle-dot is fast at 1x but crowds the view behind a magnifier, while a small precision reticle is slower up close. With AMR detection and a display, the optic could show a bright circle-dot with minimal clutter when the magnifier is stowed, then switch to a smaller aiming point, calibrated BDC, wind references, and reduced brightness when the magnifier flips in.

That one sight would cover the jobs of a ROMEO8T-AMR, a ROMEO9T, a BDX rangefinder link, and a programmable BDC optic. Unlike a camera-based smart scope, it would still be a reflex sight with a transparent optical path, so a dead battery costs the reticle and electronics, not the view through the glass. The app should handle reticle building, ballistic profiles, and firmware, while everything needed in use stays on physical buttons or a remote switch, the same split SIG uses on XRAY5.

Cost is the obvious catch. A rugged carbine optic with a display, onboard ballistics, multiple zero profiles, magnifier detection, and rangefinder integration would sit in the premium smart-optic tier.

XRAY5 is not just another enclosed pistol dot with an app. The fixed emitter matrix changes how the sight holds and recalls zero, while the roof-mounted collimator changes the optical path in front of the shooter. Those are hardware choices with clear practical goals: remove a moving adjustment assembly, look through a flat window, and let one optic store more than one known zero. SIG showed those ideas on the XRAY7-CO machine gun optic first. XRAY5 is the version sized for a pistol slide.

The four-version lineup covers both common footprints and SIG's own SIG-LOC ecosystem. SIG reports more than 100,000 rounds and severe drop and submersion testing without failure or loss of zero. Those manufacturer results set a high bar; independent testing of production optics will show how well Digital Zero, ZDO, LightFight, and the round counter hold up in daily use.