SIG Sauer P320 X-Series 9mm Luger with SilencerCo Threaded 5.5 in Barrel, Suppressor-Height Sights, Optics-Ready Slide, AC-Marked Magwell, and 4x 21-Round Magazines
This customized P320 X-Series stands out with a factory optics-cut slide, a SilencerCo threaded barrel, and an AC-marked flared magwell installed. It includes four 21-round steel magazines and suppressor-height iron sights, combining practical upgrades with clean overall condition. The slide and barrel carry clear maker markings, and the pistol retains the X-Series flat-faced trigger and modular grip module with extended beavertail.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minimal markings from previous handling and use. The bore is bright and clean. See photos for details.
What’s Included
- Original case
- 4x 21-round steel magazines stamped 'MADE IN ITALY' with witness holes
- SilencerCo threaded barrel (installed)
- Thread protector (installed)
- AC-marked flared magwell (installed)
The P320 X-Series foundation delivers a striker-fired 9mm with a flat-faced trigger and a textured aluminum grip module featuring an extended beavertail. Ambidextrous slide catch levers and a full-length Picatinny (1913) accessory rail support versatile setup options. The slide is marked "SIG SAUER P320," and the grip module is marked "Washougal WA, USA" just below the FCU serial window; the FCU serial plate displays only the serial number.
The slide is optics-ready with a cover plate and includes front and rear serrations for positive manipulation. Sighting is via suppressor-height iron sights with a green-ring front dot and a tall rear sight, giving a clear, elevated sight picture over the threaded muzzle.
The installed SilencerCo threaded barrel measures 5.5 inches and is fitted with a thread protector. The barrel is clearly marked "SILENCERCO," aligning the build with a reputable barrel maker.
Capacity is 21+1, and this pistol ships with four 21-round steel magazines stamped "MADE IN ITALY" and equipped with witness holes. An AC-marked metal flared magwell is installed, complementing the high-capacity setup.