Sig Sauer P320 Full-Size 9mm Luger — Custom Build with True Precision Threaded Barrel, Slide, and Compensator, 4.7 in, 21+1, Night Sights
This customized Sig Sauer P320 Full-Size stands out with a suite of True Precision components and practical upgrades. It features a True Precision Threaded Barrel, True Precision Slide, and True Precision Compensator, plus suppressor-height tritium night sights, a flat-faced skeletonized trigger, a flared magwell insert, and a 21-round magazine with an extended basepad. The slide includes an optics cut with a cover plate, and the modular P320 FCU configuration offers flexibility within the platform.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Light handling and use marks are present on exterior surfaces. See photos for details.
What’s Included
- Slide: True Precision slide with lightening windows and optics cut with cover plate (installed)
- Barrel: True Precision 1/2x28 threaded barrel (installed)
- Compensator: 1/2x28 compensator (installed)
- Sights: Suppressor-height tritium night sights marked NF H3 (installed)
- Magwell: Flared magazine well insert (installed)
- Magazine: 1x 21-round steel double-stack magazine with extended basepad
The True Precision Slide brings functional upgrades with lightening windows, rear cocking serrations, and an optics cut capped by a plain, ridged cover plate secured by two screws. A small “X” mark is present forward of the optics cut on the top of the slide near the barrel hood. Its matte black/gray finish matches the overall two-tone presentation and complements the polymer frame’s matte black/gray finish.
At the core is the True Precision Threaded Barrel (1/2x28) paired with a 1/2x28 True Precision Compensator. This setup is built around the P320’s tilting-barrel, locked-breech operation and 4.7-inch full-size length for reliable cycling and balanced handling.
Suppressor-height tritium night sights are installed, with a bright green-ringed front dot and a rear sight marked NF H3 for low-light visibility and a clear sight picture over the compensator. The slide’s cover plate protects the optics cut when not in use.
The striker-fired FCU-based design retains the P320’s modularity, with a flat-faced, skeletonized trigger for a consistent press. A flared magwell insert speeds reloads, and the included steel double-stack magazine with an extended basepad provides a 21+1 capacity. A 4-slot accessory rail on the dustcover supports common lights or lasers. The frame is marked NEWINGTON, NH, USA.