The Ruger SR1911 Lightweight is a full-size 1911-pattern semi-automatic pistol chambered in .45 ACP. It uses an aluminum frame and a stainless steel slide to reduce carry weight while retaining full-size ergonomics and a traditional 1911 fire-control layout. Controls and features reflect classic 1911 design with modern machining and fit for consistent performance on the range and in duty-oriented applications.
Key Specifications
- The caliber is .45 ACP.
- The barrel measures 5 inches.
- The action is semi-automatic.
- The frame material is aluminum.
- The slide material/finish is stainless steel / low-glare matte stainless.
- The grip material is G10.
- The sights are listed as Drift Adjustable Novak 3-Dot in several specifications.
- The overall length is 8.67 inches.
- The weight is listed as 31.1 ounces.
- The trigger is a skeletonized aluminum style consistent with the lightweight design.
The SR1911 Lightweight combines traditional 1911 ergonomics with lighter materials for reduced carry weight without sacrificing the platform’s familiar controls. CNC machining and polished feed ramping contribute to consistent function and a refined slide-to-frame fit. The pistol accepts common 1911-format parts and accessories for customization and maintenance.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.




