SIG Sauer P320 Full-Size 9mm Luger, 4.7" Barrel, 17+1 Capacity, Black Polymer Frame, Fixed 3-Dot Sights, With case
This full-size SIG Sauer P320 stands out with its modular fire-control unit, proven striker-fired system, and a 4.7" barrel paired with a 17+1 capacity. It features dovetailed fixed 3-dot contrast sights, front and rear diagonal cocking serrations, and an accessory rail. Manufactured and marked in Newington, New Hampshire, it disassembles via a rotating takedown lever without a trigger pull and has no external manual-safety levers. Three 17-round steel magazines are included, with two marked Made in Italy and one marked Made in USA.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Exterior surfaces show handling and use marks consistent with prior ownership. Please refer to the photos for close-up views of these areas.
What’s Included
- Owner's manual
- Three 17-round steel P320 magazines (two marked Made in Italy, one marked Made in USA)
- Box/case included
The P320’s modular design centers on its serialized fire-control unit, allowing the user to swap grip modules and slide/barrel assemblies within the platform. This provides flexibility to tailor size and configuration while maintaining the same core trigger group.
The slide includes front and rear diagonal cocking serrations for confident manipulation. Dovetailed fixed 3-dot contrast sights deliver a clear sight picture, and the full-size 6.6-inch sight radius aids practical aiming precision.
The 4.7" barrel with a 1:10 twist and the striker-fired action are paired with a 17+1 capacity, making this configuration well suited to full-size duties. The frame is constructed from glass-reinforced polymer with stippled black polymer grips, and it integrates an accessory rail for mounting compatible lights or lasers.
Operationally, the pistol disassembles using a rotating takedown lever that does not require a trigger pull. It has no external manual-safety levers. This example is manufactured and marked in Newington, NH, USA, and the platform lineage underpins the U.S. military M17/M18 adopted in 2017.