Wilson Combat 33D 1911 45 ACP 5" Match Grade Stainless Steel Barrel

The Wilson Combat 33D is a 45 ACP Match Grade drop-in replacement barrel for full-size 1911 Government-pattern pistols. Built to Wilson Combat's match-grade standard, the 33D is intended for shooters who want tighter groups, longer service life, and consistent throat geometry from their carry, competition, or duty 1911.

Each 33D barrel is fully machined from a 416R stainless steel forging and then heat-treated to RC 40 for the best combination of surface hardness, core toughness, and corrosion resistance. The result is a precision drop-in barrel with the kind of bore dimensions and concentricity Wilson Combat match barrels are known for.

Designed as a direct drop-in fit for 1911 Government / full-size 5" slides, the 33D installs in place of the factory barrel with no fitting required. The 1:16 rifling twist is optimized for standard and +P 45 ACP jacketed and lead bullet weights, and the 5" overall length matches the original Government profile for correct sight radius and reliable cycling.

The stainless finish resists wear and corrosion from fouling, perspiration, and holster wear, making the 33D equally at home in a daily-carry pistol, a USPSA or IDPA competition gun, or a custom shop build. No sights are installed, allowing the end user or gunsmith to fit the barrel to a specific slide and sight picture.

Wilson Combat drop-in barrels are a popular upgrade path for shooters looking to tighten up groups, replace a worn factory barrel, or build a custom 1911 around proven match-grade components.