Sig Sauer P320 Carry 9mm Built on M18 FCU with Manual Safety, Wilson Combat Grip Module, Holosun SCS 320-GR, 3.9 in Barrel, 21+1
This custom P320 is built on a military-spec M18-series FCU with a manual safety and a QR-coded chassis, then finished with a Wilson Combat grip module and a Holosun SCS 320-GR green-reflex sight. It combines a compact 3.9-inch barrel with tall iron sights, a flat-faced trigger, and an extended 21-round magazine, delivering a well-equipped, ready-to-use package.
Condition
Overall Condition: Fair condition, showing extensive 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: Minor surface scratches and small blemishes are present on the pistol. The bore is clean and shiny. The Holosun optic has clear, clean glass with minor external marks. The optic was installed on the slide using red Loctite and will be very difficult to remove.
What's Included
- SIG Sauer factory hard pistol case (gray)
- SIG Sauer owner's manual and related paperwork
- Holosun SCS 320-GR reflex sight (green reticle), installed; integrated solar charging array
- One 21-round extended steel magazine (Made in Italy)
The heart of this build is the M18-series serialized FCU with a manual safety and QR code, providing the foundation for the Carry P320 configuration. The striker-fired action pairs with a flat-faced trigger for a consistent pull, and the slide carries front and rear serrations with a matte black finish.
The Wilson Combat P320 grip module is cut for the manual safety and features aggressive starburst-style texturing for traction. It includes a molded beavertail, a high undercut at the trigger guard, and a subtly flared magwell. Molded markings read "WILSON COMBAT" and "BERRYVILLE, AR, USA."
Sighting is handled by tall iron sights with a green-dot front, complemented by the Holosun SCS 320-GR reflex optic. The SCS uses a green reticle and an integrated solar charging array, and it is installed directly to the slide.
With a 3.9-inch barrel and Carry configuration, this pistol balances carry and control. A 4-slot accessory rail on the dust cover supports lights or lasers, and the included 21-round extended magazine brings total on-board capacity to 21+1.