SIG Sauer P320 Full-Size 9mm, 4.7-Inch Barrel, Modular FCU, Fixed Sights, Includes 30-Round Magazine
This full-size SIG Sauer P320 in 9mm Luger features the duty-length 4.7-inch barrel, a modular removable FCU, and a legacy non-optics-cut slide with front and rear serrations. It includes fixed sights, an ambidextrous slide catch, and an integral Picatinny/1913 accessory rail. Made in the USA with a stainless steel receiver and black polymer grip module, it ships with one extended 30-round magazine.
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: There are markings from prior handling and use. Refer to pictures.
What’s Included
- SIG Sauer P320 Full-Size 9mm pistol
- One 30-round extended-length steel 9mm magazine
The P320’s modular FCU design allows the fire control unit to be removed from the grip module, giving this pistol its well-known adaptability. This example pairs that system with a full-size black polymer grip module and a stainless steel receiver.
The legacy, non-optics-cut slide includes both front and rear serrations for confident manipulation. Sighting is straightforward with fixed, dovetailed sights.
The 4.7-inch steel barrel is non-threaded with a standard crown, and the striker-fired, locked-breech action delivers the familiar P320 operating system. Controls include a left-side push-button magazine release, ambidextrous slide catch, and a left-side takedown lever.
An integral Picatinny/1913 accessory rail on the dust cover supports common duty attachments. This pistol comes with one extended 30-round magazine, providing a 30+1 capacity.
Country of origin is the USA, with the frame marked Newington, NH, USA.

