5 Great Aftermarket Upgrades for the SIG P320

A. A high-visibility design combined with the low-light utility of tritium, Trijicon HD Night Sights for the SIG Sauer P320 feature a bright, easy-to-see orange outline surrounding a tritium dot paired with a shallow, U-shaped plain-black rear aperture that draws the eye instinctively to the brightly colored front post. A ledge-like contour on the rear assembly aids in one-handed malfunction clearance. MSRP: $165; trijicon.com

B. Available in two different configurations for full-size P320s, the Zev Technologies Z320 XFull Octane Slide offers consumers ergonomic and practical enhancements over factory components—the most noticeable of which is a milled cut that allows the mounting of a Trijicon RMR-pattern optic without removing the rear sight. Slide-channeling serrations provide ample purchase whenever manipulation is required. Skeletonized cutouts make for a faster-moving slide and enhance barrel-cooling properties. MSRP: $420; zevtechnologies.com

C. Machined from 4150 or 416R stainless steel for durability and longevity, the Faxon Firearms P320 Flame Fluted Barrel, Threaded boasts practical features such as SAAMI-compatible chambers and tighter tolerances for an improved drop-in fit and greater lockup, all of which contribute to improved accuracy. Flame fluting along the exterior aids in heat dissipation. MSRP: $215; faxonfirearms.com

D. Engineered for maximum shooting potential, the Wilson Combat Full-Size P320 Grip Module offers enhanced ergonomics for an improved grip and greater recoil control. A high-cut 1911-style beavertail grip tang facilitates smooth draws. The frontstrap has been undercut and reshaped, while the trigger guard is radiused. Aggressive texturing fore and aft along with the company’s Starburst grip pattern span the sides. Internal slots allow for the addition of optional rod-style Tungsten weights. MSRP: $64.95; wilsoncombat.com

E. Designed to replace the OEM floorplate while retaining all other factory components, the NDZ Performance Magazine Floor Baseplate for SIG Sauer P320 is machined from 6061 T6 aircraft-grade aluminum, a much more durable and practical alternative to OEM polymer offerings—without adding burdensome length or weight. Choose from nearly a dozen different colors. Laser-engraved designs are available, too. MSRP: $14.95; ndzperformance.com