Sig Sauer P320 X-Series 9mm 4.6" Threaded Barrel 21rd Optic Ready

The Sig Sauer P320 X-Series delivers enhanced accuracy and modularity for serious shooters who demand precision from their striker-fired pistol. This full-size configuration combines a threaded barrel for suppressor compatibility with optic-ready capabilities in a proven platform trusted by military and law enforcement worldwide.

What Makes This Different

The X-Series grip module features aggressive texturing and enhanced ergonomics that provide superior control compared to standard P320 models. The optic-cut slide accommodates popular red dot sights without requiring additional machining, while the threaded barrel accepts suppressors and muzzle devices with standard 1/2x28 threading. Cerakote finish provides corrosion resistance that exceeds standard Nitron coatings by 300% in salt spray testing.

Key Features

• 4.6-inch threaded barrel with 1/2x28 TPI for suppressor compatibility
• Optic-ready slide cut accepts Romeo1Pro, DeltaPoint Pro, and similar footprints
• X-Series grip module with laser-engraved texturing and enhanced ergonomics
• 21-round magazine capacity with witness holes for round counting
• Serrated slide provides positive grip for press checks and malfunction clearing
• Black Cerakote finish resists wear and environmental exposure
• Modular FCU allows caliber conversions and grip size changes

Field performance demonstrates consistent 2.5-inch groups at 25 yards with quality ammunition. The striker-fired action provides a clean 6-pound trigger break suitable for competitive shooting and duty applications. Weather sealing protects internal components during adverse conditions, maintaining function in temperatures from -40°F to 160°F. The modular fire control unit enables quick barrel and caliber changes for training versatility.

Technical Specs

• Caliber: 9mm Luger
• Barrel Length: 4.6 inches, threaded 1/2x28 TPI
• Overall Length: 8.5 inches
• Height: 5.5 inches
• Width: 1.4 inches
• Weight: 29.5 ounces (unloaded)
• Magazine Capacity: 21 rounds
• Sight Radius: 6.6 inches
• Trigger Pull: 5.5-6.5 pounds
• Frame Material: Polymer with stainless steel chassis
• Slide Material: Stainless steel with Cerakote finish
• Country of Origin: USA

This configuration addresses the needs of shooters requiring both suppressor capability and optic mounting in a single platform. The X-Series enhancements justify the premium over standard P320 models through measurable improvements in grip security and component durability.