The Wilson Combat WCP320 is a striker-fired 9mm pistol built on the SIG P320 FCU with Wilson Combat's custom fit and finish. It ships with a black modular polymer grip, a Chromoly Black DLC slide, fiber optic front sight, and Battlesight rear. No manual safety. The flat-faced XFULL trigger provides a defined, consistent pull. 
 

Key Specifications 

• Brand: Wilson Combat 
• Model: WCP320 
• Caliber: 9MM Luger 
• Action: Striker Fire 
• Capacity: 17+1 rounds 
• Barrel Length: 4.7 inches 
• Overall Length (OAL): 8.25 inches (15.5 inches with magazine) 
• Weight: 29.20 oz (1.8 lbs) 
• Sights: Battlesight Rear & Fiber Optic Front 
• Grip Material: Black Modular Polymer 
• Trigger Type: Standard flat-faced XFULL trigger 
• Safety Features: No manual safety 
• Finish Color/Type: Chromoly Black DLC 
   

Detailed Features 

• Striker-Fire Action: Uniform pull weight throughout the stroke on every shot. 
• 17+1 Capacity: Good for extended practice or carry use without frequent reloads. 
• Fiber Optic Front / Battlesight Rear: Quick target acquisition across different lighting. 
• Black Modular Polymer Grip: Textured for grip without being overly aggressive. 
• Black DLC Finish: Chromoly slide with Diamond-Like Carbon coating; resists wear and corrosion.

The Wilson Combat WCP320 gets consistently good marks for build quality and trigger feel, with price being the most common point of debate.

Fit and finish are frequently praised. Wilson Combat's work over the standard P320 platform is noticeable, and most owners feel the craftsmanship is a cut above a factory SIG.

Accuracy out of the box is a common highlight. The striker-fired action and flat-faced XFULL trigger get credit for easy, repeatable shot placement.

The trigger is often singled out. Users describe it as smooth and consistent, and several note it's among the better pulls they've used in a striker-fired pistol at this price level.

Customization gets attention too. The P320 platform's modularity means owners can swap grip modules and adapt the FCU to different frame sizes, which appeals to those who want flexibility.

17-round capacity suits both range use and carry without feeling too bulky.

Reliability is a strong point overall. Few issues come up in extended use, which builds confidence for carry or competition.

The price premium over a stock P320 is the central debate. Most buyers who go in knowing what Wilson Combat's work costs feel it's justified; those comparing it casually to base-model pistols sometimes don't.