
Since 1971, Bar-Sto Precision Machine has been setting the standard for excellence in auto-pistol barrel manufacturing.
Precision Crafted Auto-Pistol Barrels
Unmatched Quality
Every Bar-Sto barrel is meticulously machined from solid 416 stainless steel, ensuring durability and performance that exceeds expectations.
Trusted by Professionals
Our barrels have been utilized by the U.S. Marine Corps Marksman Unit and have a proven track record in winning major tournaments worldwide.
Precision Engineering
With a heat treatment of 39 to 43 RC and a tensile strength of 180,000 PSI, our barrels are engineered for accuracy and reliability in any situation.
Shop Our Barrels
Discover the perfect barrel for your auto-pistol needs, crafted for precision and performance.
Our Legacy of Precision
A glimpse into the history and milestones of Bar-Sto Precision Machine.
September 29, 2025September 29, 2025September 29, 2025What Our Customers Say
Testimonials from our satisfied customers highlight the quality and performance of our products.
John D.
The precision of my Bar-Sto barrel is unmatched. I’ve seen significant improvements in my shooting accuracy.Lisa M.
As a competitive shooter, I rely on Bar-Sto barrels for their consistent performance. They never let me down.Tom S.
The durability of these barrels is incredible. I trust Bar-Sto for all my tactical needs.Technical Insights
Explore the specifications that make Bar-Sto barrels the choice of professionals.
Material Excellence
Our barrels are machined from solid 416 stainless steel bar stock, providing superior strength and corrosion resistance. This material choice ensures longevity and reliability in performance.Heat Treatment Process
Each barrel undergoes a rigorous heat treatment process, achieving a hardness of 39 to 43 RC. This treatment enhances the barrel's durability and performance under pressure.Precision Engineering
All Bar-Sto barrels feature a rate of twist of 1 turn in 16″, designed to optimize bullet stability and accuracy. Our precision engineering reflects our commitment to quality.
Street address: 3571 Hansen Ave, Sturgis SD 57785