Wilson Combat 33D 1911 Drop-In Barrel 5″ .45 ACP

The Wilson Combat 33D is a match-grade drop-in barrel for 1911 pistols chambered in .45 ACP. It is fully machined from aircraft-grade stainless steel forgings and heat-treated to R/C 40 for extended service life. Critical manufacturing tolerances are held to less than .0005″ to ensure consistent fit and repeatable performance. This 5″ stainless barrel is intended for precision shooting and competition use on compatible 1911 platforms.

Key Specifications

• The manufacturer is Wilson Combat.
• The model is 33D 1911.
• The caliber is .45 ACP.
• The barrel length is 5″.
• The barrel type is Drop In.
• The bore type is Rifled.
• The finish is Stainless.
• The rate of twist is 1:16″.
• The barrel weight is .26 lbs.
• Designed for Jacketed/Lead ammunition.

With precision machining, heat treatment, and tight tolerances, the 33D offers a durable, match-grade option for shooters building or upgrading a 1911 for target work and competition. Its drop-in design simplifies installation while stainless construction supports long-term service life and consistent performance on the range.