The Sig Sauer P320 X-Carry Navy Seal is a striker-fired semi-automatic pistol chambered in 9mm Luger (9x19 Para) with a 4.6-inch threaded barrel, 21-round capacity, and Tritium XRAY3 suppressor sights. The polymer frame has a Black Nitron finish. 
 

Key Specifications 

• Model: P320 X-Carry Navy Seal 
• Caliber: 9MM Luger (9x19 Para) 
• Action: Striker Fired 
• Capacity: 21 Rounds 
• Barrel Length: 4.6 inches 
• Weight: 1.8 lbs (40.5 oz.) 
• Sights: Tritium XRAY3 Suppressor Sights 
• Muzzle Type: Threaded (1/2x28) 
• Finish: Black 
   

Features 

The threaded 1/2x28 barrel accommodates a suppressor without an adapter. Tritium XRAY3 suppressor-height sights maintain a usable sight picture even with a can mounted. At 21+1 rounds, the capacity is high for a 9mm carry/duty pistol. The slide is optics-ready, so you can add a red dot without a milling visit. The P320 platform's modularity means the FCU (fire control unit) can be reconfigured with different frame sizes and slide lengths if your needs change. Grip texture is aggressive enough for wet hands without being abrasive in daily carry. 
 

Usage 

• Duty and law enforcement carry 
• Suppressed shooting 
• Competitive shooting 
• Home defense

The P320 X-Carry NS in 9mm generates positive feedback across most owner categories, with a few consistent notes worth knowing.

Ergonomics and grip comfort come up repeatedly. The grip angle and texture suit most hand sizes without modification. Accuracy reports are strong, and the XRAY3 tritium sights are appreciated by owners who use suppressors and by those who just want better low-light visibility. The 21-round capacity is a genuine advantage for competition or duty use. Reliability across ammunition types is consistently rated well.

The P320 platform's modularity gets its own discussion among enthusiasts. The ability to swap FCUs between frames is a real plus for buyers who want flexibility. Aftermarket support is wide, covering optics, grips, triggers, and more.

On the other side: at 40.5 oz. with a full magazine, this isn't a lightweight carry option; some owners note it's bulkier than they wanted for everyday concealed carry. Sight preference is personal, and a few shooters immediately swap to their preferred aftermarket option. Price is on the higher end of the striker-fired 9mm market, though most owners feel the quality and features support it.

For anyone specifically looking for a suppressor-ready, optics-ready, high-capacity 9mm with proven reliability, the P320 X-Carry NS is a well-considered choice.