SIG Sauer P320

Modular Striker-Fired Pistol

The SIG Sauer P320 is a modular, polymer-framed, striker-fired handgun renowned for its adaptability, reliability, and widespread adoption in military, law enforcement, and civilian markets.

Key Features

• Modular Fire Control Unit (FCU): Serialized stainless steel chassis that can be dropped into various grip modules and slide assemblies for caliber and size conversions (9mm, .357 SIG, .40 S&W, .45 ACP, 10mm).
• Interchangeable Grip Modules: Available in Compact, Carry, Full-Size, and Subcompact frames with Small, Medium, and Large backstraps for custom fit.
• Optics-Ready Variants: Factory-milled slides for direct mounting of red dot sights (e.g., ROMEO1PRO, Trijicon RMR).
• Trigger System: Smooth, consistent 5.5–6.5 lb pull with short reset; optional flat-faced or manual safety variants.
• Safety Features:
  • 3-point takedown safety
  • Striker safety
  • Disconnect safety
  • Optional ambidextrous manual thumb safety

Performance

• Accuracy: 2–3" groups at 25 yards (factory ammo).
• Reliability: Proven in extreme conditions; selected as the U.S. Army’s M17/M18 service pistol after rigorous XM17 Modular Handgun System trials.
• Aftermarket Support: Extensive holsters, sights, barrels, and conversion kits from SIG and third parties.

“The P320’s modularity allows one serialized FCU to become a full-size duty gun, compact carry pistol, or .45 ACP powerhouse — all without tools.”

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Caliber Options: 9x19mm Parabellum • .357 SIG • .40 S&W • .45 ACP • 10mm Auto
Weight (unloaded): ~25–30 oz (varies by configuration)
MSRP: $550–$1,000+ (depending on model and features)