The SIG Sauer P320 Spectre Comp Blackout (P320V004) is a full-size, striker-fired 9mm pistol produced by SIG Custom Works with a factory-installed single-port compensator, tungsten-infused grip module, and XRay3 day/night sights, built for competition shooters, advanced range users, and serious defensive shooters who want a factory-complete compensated 9mm pistol with Custom Works fit and finish straight out of the box.
Key Features
- Part number: P320V004
- Caliber: 9mm Luger
- Capacity: 21+1 rounds
- Barrel length: 4.6 inches, carbon steel, threaded 1/2 x 28, Nitron finish
- Action: Semi-automatic, striker-fired
- Frame: Polymer, full-size X-Series
- Grip module: TXG tungsten-infused X-Series, Blackout Cerakote, laser-engraved stippling
- Slide: Stainless steel, Blackout Cerakote, optic-ready with falling serrations
- Front sight: XRay3 tritium day/night, green
- Rear sight: XRay3 day/night, rear notch with orange outline
- Trigger: X Flat Skeletonized, single action
- Compensator: Single-port, taper-screw mounted, Nitron finish
- Rail: M1913 Picatinny
- Overall length: 8.5 inches
- Height: 5.8 inches
- Width: 1.6 inches
- Weight: 41.8 ounces
- Magazines included: Two 21-round steel magazines
- Optic plate: Compatible with Romeo1PRO, DeltaPoint Pro, RMR
- Includes: SIG Custom Works coin and certified custom certificate
Special Features
- The TXG tungsten-infused grip module adds significant mass to the lower frame, shifting weight forward and downward to keep the muzzle tracking flat during rapid fire and to reduce the perceived movement of the pistol during fast strings.
- The laser-engraved Blackout Cerakote stippling pattern on the TXG grip module is applied directly to the Cerakote surface using a precision laser, producing a functional stipple texture that holds its edge under repeated use without the wear associated with mechanical stippling methods.
- The factory single-port compensator mounts directly to the threaded barrel using two taper screws, allowing the shooter to install or remove it without a gunsmith, and it houses the front XRay3 sight post to maintain a stable and consistent sight picture during firing.
- The Custom Works Spectre optic-ready slide is pre-cut to accept major red dot footprints including the Romeo1PRO, DeltaPoint Pro, and RMR, making a direct red dot installation a bolt-on process with no slide milling required.
- The X Flat Skeletonized Trigger removes material from the trigger shoe to reduce mass and provide a flat-face geometry that promotes consistent finger placement and a cleaner, more repeatable pull stroke across high round count use.
- The XRay3 day/night sights use a tritium front post with a bright green ring and an orange-outlined rear notch, delivering a three-dot-style sight picture in normal light and a glowing front reference point in low or no light without requiring any activation.
- The falling serrations on the Blackout Cerakote slide are angled forward, providing a distinctive visual profile and aggressive grip surface for press checks and administrative handling under stress.
- The SIG Custom Works coin and certified custom certificate included with each pistol document its production origin within the Custom Works program, distinguishing the P320V004 as a produced-to-standard Custom Works build rather than a standard production variant.
Practical Benefits
- The factory compensator and tungsten grip module together push 41.8 ounces of mass into a layout designed to keep the muzzle on target during rapid fire, which translates directly to tighter groups and faster splits on the range or in competition.
- The threaded barrel means the compensator comes off in seconds when you want to run a suppressor, giving you a single host pistol that handles both configurations without any permanent modifications.
- The 21-round steel magazines give you a deep load for USPSA, competition stages, and high-volume range sessions, and the P320 magazine ecosystem is one of the most widely supported in the industry for factory and aftermarket options.
- The optic-ready slide lets you mount your preferred red dot today and run iron sights as a co-witness backup, so the pistol grows with your optics setup without requiring any additional machining expense.
- The M1913 Picatinny rail gives you a direct mounting surface for full-size weapon lights and lasers, making the P320 Spectre Comp Blackout a capable platform for home defense, low-light training, and force-on-force scenarios where illumination tools matter.
- If you want a Custom Works-built, compensated, optic-ready 9mm that ships with tungsten grip mass, tritium night sights, and a skeletonized trigger already installed, the SIG Sauer P320 Spectre Comp Blackout delivers every one of those features in a single factory package.
The SIG Sauer P320 Spectre Comp Blackout (P320V004) in 9mm is a proven platform and capable tool for the competition shooter or advanced defensive shooter who wants a SIG Custom Works-grade, compensated full-size 9mm built to perform at the highest level from the first round fired.
| MANUFACTURER | SIG SAUER |
| MODEL | P320 |
| CALIBER | 9MM |
| TYPE | PISTOL |