The SIG XRAY5 is an enclosed-emitter pistol red dot that replaces conventional mechanical windage and elevation adjustments with digital zeroing. It can be adjusted using its onboard buttons; a phone is not required for basic sight adjustment. The app adds configuration tools and multiple zero profiles.
That distinction matters. A sight that offers an optional app is one thing. A defensive optic that becomes useless because a phone is dead would be something else entirely.
This SIG XRAY5 review examines the documented design, mounting options, prices and early owner reports. I have not personally tested the optic, so there are no invented recoil impressions, drop tests or round counts here.
What Makes the SIG XRAY5 Different?
Most pistol red dots adjust the relationship between their optical components mechanically. The XRAY5 instead uses a fixed 225-element LED matrix to change the dot’s position electronically. SIG markets this as solid-state construction without moving adjustment components.
The enclosed housing protects the emitter, while SIG’s Zero Distortion Optical System changes the optical arrangement to provide a view through a flat front window. SIG identifies the XRAY5 as a reflex sight—not a holographic sight. Its claims of superior clarity and durability remain manufacturer claims, not independent conclusions.
The idea deserves attention. Eliminating a mechanical adjustment assembly could remove one potential source of movement. It does not eliminate loose mounting screws, damaged electronics, battery trouble or software problems.
“No moving parts” is an engineering description, not a promise that nothing can fail.
SIG XRAY5 Specifications
SIG lists these specifications for the XRAY5 Enclosed PRO:
Feature
Factory specification
Reticle
Red 3.5-MOA dot
Clear aperture
24mm, measured diagonally
Battery
One CR2032, accessed from the side
Battery life
Up to 10,000 hours
Brightness
13 daylight and two night-vision settings
Adjustment
Onboard buttons or XRAY5 app
Windage/elevation travel
80 MOA each
Housing
7075 aluminum with titanium lens shield
Optical system
Fully enclosed and argon-purged
These are published specifications, not results from my own testing. Battery life is an “up to” figure, not a replacement schedule that owners should blindly adopt.
My preference for a defensive optic is straightforward: replace batteries predictably, check function regularly and confirm zero. A marketing number does not excuse neglect.
Does the XRAY5 Need a Phone?
No. SIG explicitly says the sight’s critical functions and adjustments are accessible through its two control buttons.
The app provides access to features including multiple zero profiles, digital-zero configuration, motion-activation settings, auto-off settings, a battery indicator and the round counter. It also supports the LightFight system. SIG’s XRAY5 support page links the current manual and FAQ.
That makes the app a configuration interface rather than a requirement to aim the pistol.
Still, buyers should learn the button controls before trusting the sight. “I can probably figure it out when necessary” is a poor maintenance plan, particularly when the product operates differently from familiar optics.
A phone can make setup convenient. It should not become the only place an owner knows how to operate his equipment.
XRAY5 Footprints: PRO, Compact and SIG-LOC
There are four mounting versions. The names are similar enough to invite expensive mistakes.
XRAY5 version
Mounting interface
Enclosed PRO
DeltaPoint Pro footprint
Enclosed Compact
Shield RMSc footprint
SIG-LOC PRO
SIG-LOC PRO
SIG-LOC Compact
SIG-LOC Compact
SIG’s manual identifies these as four distinct footprints and says the interface name is engraved underneath the optic. It also supplies a mounting-screw application table with different hardware and torque requirements.
“Enclosed” does not mean ACRO footprint. “PRO” does not mean RMR. And a Compact model is not interchangeable with SIG-LOC Compact merely because both names contain the same word.
Before buying, verify the exact slide cut, optic model, required plate and fasteners. Follow the current instructions for the complete combination rather than borrowing a torque number from an unrelated installation.
For related pistol context, the P365-AXG Equinox article discusses that model’s compact-optic interfaces. The pistol and optic still need to be checked as a specific pairing.
SIG XRAY5 Price and Availability
As checked on November 4, 2026, SIG’s website listed:
- Enclosed Compact: $499.99
- Enclosed PRO: $549.99
- SIG-LOC Compact: $549.99
- SIG-LOC PRO: $599.99
These are SIG website prices, not guaranteed dealer prices. The Compact and SIG-LOC PRO pages showed out-of-stock notices when checked, so a launch announcement should not be confused with universal availability.
At roughly $500–$600, the XRAY5 needs to offer more than novelty. Digital adjustment must be intuitive, the mounting arrangement must be sound and the sight must retain its settings consistently.
Buy the correct interface first. Saving twenty dollars on the wrong version is not a bargain.
Digital Zeroing and Multiple Profiles
The practical attraction of digital zeroing is eliminating tiny adjustment screws and saving different settings.
Multiple profiles could be useful when ammunition produces a repeatable point-of-impact difference. They could also create confusion if the owner forgets which profile is active.
My approach would be conservative: establish one primary zero, verify it with the intended ammunition and understand profile selection before adding alternatives. More settings are not automatically more capability.
The same caution applies to app-guided setup. A calculated correction still needs live-fire confirmation. The application cannot tell whether the group was distorted by poor shooting, a loose mount or inconsistent ammunition.
For a defensive pistol, boring consistency beats a collection of clever presets.
XRAY5 Problems and Early Owner Reports
One early owner posted an October 20 report describing pairing trouble and difficulty moving the dot. The subsequent update said a complete reset resolved the problem. That is a useful firsthand report, but it does not establish a defect rate or prove that all XRAY5 optics share the issue.
If an XRAY5 will not pair, adjust or retain settings, consult SIG’s current instructions and support rather than improvising from scattered comments.
For intermittent illumination, the manual specifically warns that an improperly secured battery cap can cause unreliable LED operation or permit moisture entry.
Keep the categories separate: mounting trouble, battery contact, app pairing and failed electronics are different problems. Calling all of them “the optic lost zero” makes diagnosis harder.
XRAY5 vs ROMEO-X: Should You Switch?
An established optic that fits properly and performs consistently does not become obsolete because another model adds digital profiles.
The XRAY5’s appeal is its different adjustment architecture and connected features. Whether those features justify replacing a satisfactory ROMEO-X depends on the owner’s needs—not the excitement surrounding a launch.
I would not replace dependable equipment solely to acquire an app. I would consider the XRAY5 if its controls, optical presentation and mounting options solved a problem my existing sight did not.
That is the standard manufacturers should meet.
The Verdict
The SIG XRAY5 is interesting because it changes how a pistol optic is adjusted, not merely its housing shape.
The documented advantages are clear: enclosed construction, tool-free electronic adjustment, several mounting interfaces and optional app-based configuration. Long-term reliability and practical superiority require independent evidence.
Private gun owners deserve that evidence just as much as agencies buying equipment with somebody else’s money. A badge on the customer does not make a manufacturer’s claims more convincing.
The XRAY5 deserves examination. It has not earned an automatic recommendation simply by being new.
GarandThumb.com was established on May 4, 2012, to document my experiences trying to become a better marksman.