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SIG SAUER P320 XCOMPACT

Product Information & Specs

Seller Description For This Firearm

The SIG Sauer P320 is a striker-fired, semi-automatic pistol known for its modular design. The serialized fire control unit can be moved between different grip modules, slide assemblies, and calibers, allowing owners to customize the pistol to their preferences. The P320 has been offered in .357 SIG, .40 S&W, 9mm, and other calibers.

Key Features
Caliber: .357 SIG
Action: Striker-fired
Capacity: Typically 13–14 rounds depending on the model and magazine configuration.
Barrel lengths: Available in Full-Size, Carry, Compact, and Subcompact configurations.
Modular grip frames in multiple sizes.
Accessory rail for lights and lasers.
SIGLITE night sights on many factory models.
About the .357 SIG Cartridge

The .357 SIG cartridge was developed by SIG Sauer and Federal Premium Ammunition to provide high velocity and strong performance from a semi-automatic pistol platform. It uses a bottleneck case design and is known for flat trajectory and reliable feeding.

Pros
Excellent accuracy.
High-velocity cartridge with strong ballistic performance.
Reliable feeding due to the bottleneck cartridge design.
Modular platform allows caliber and size changes.
Cons
Ammunition is generally more expensive and less common than 9mm.
Increased muzzle blast and recoil compared to 9mm. Community discussions frequently mention the cartridge's loud report and higher ammunition cost.
Used Market Value (2026)

Depending on condition, accessories, and configuration, used P320 pistols chambered in .357 SIG commonly sell in the $400–$650 range, with premium models and optics-ready versions bringing more.

UPC ECOM00576098
Action SEMI AUTOMATIC
Barrel Length 4" BARREL
Caliber .357 SIG
Capacity 13 ROUNDS
Finish TWO TONE
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