Wilson Combat WCP320 Full-Size 9mm with TiN Threaded Barrel, Harrington Arms Comp & Optics-Ready Slide
This Wilson Combat–built WCP320 takes SIG Sauer’s proven P320 platform and layers on performance-focused upgrades. A TiN-coated, threaded stainless barrel pairs with a Harrington Arms compensator for flatter shooting, while Wilson’s X-TAC-serrated, optics-ready slide and starburst-textured FDE grip give the pistol distinctive looks and enhanced control. The result is a modular, striker-fired 9mm that blends match-grade features with everyday reliability.
Condition
Overall Condition: Good — shows some signs of prior use and handling.
Bore Condition: Excellent — clean, mirror finish, no signs of wear.
Bore Rifling: Excellent — sharp lands and grooves.
Specific Condition Notes: Moderate carbon buildup is present in the compensator; otherwise only mild cosmetic wear is visible, and the pistol functions properly.
What’s Included
- SIG Sauer P320 original 9 mm barrel (non-threaded)
- SIG Sauer P320 polymer grip module (black)
- SIG Sauer factory hard case (black polymer)
- SIG Sauer cable lock (sealed)
- SIG Sauer P320 operator’s manual
- One SIG Sauer factory 17-round steel magazine (Made in USA)
The 4.5-inch stainless barrel wears a durable titanium-nitride (TiN) finish and is threaded 1/2x28 for the included Harrington Arms compensator, reducing muzzle rise and allowing easy attachment of suppressors or additional muzzle devices.
Wilson Combat’s slide work adds deep X-TAC diamond-checkering serrations for sure manipulation and an optics-ready cut that accepts many popular micro red-dot footprints. A red fiber-optic front sight and serrated square-notch rear sight provide a bright, precise iron-sight picture.
The modular fire-control unit (FCU) is the serialized component of the P320 system, enabling caliber changes and grip swaps without an FFL transfer. This pistol ships with Wilson’s starburst-textured FDE grip module installed and a spare standard SIG black grip, giving the owner immediate ergonomic options.
A flat-faced, skeletonized trigger delivers a consistent, crisp break—hallmarks of Wilson Combat’s tuning. An integral accessory rail on the dust cover supports lights or lasers for duty, competition, or defensive roles.
Despite its custom features, the WCP320 maintains full SIG Sauer parts compatibility and uses standard 17-round magazines, making maintenance and support straightforward.