About HMI
In the Beginning
Founded in 1997 by brothers Allan and Dale Mack, our company was built on a passion for precision engineering and a relentless drive for innovation. Starting with just one CNC machine in a small shop, we’ve grown into a 30,000-square-foot facility equipped with over 40 CNC machines and a dedicated team of skilled professionals.
Branching Out
In 2007, we launched Mack Brothers, bringing our expertise to the forefront of the firearms industry. From high-performance suppressors to precision rifle actions and fully customizable rifle builds, we are committed to delivering the highest quality products for shooting enthusiasts, hunters, and professionals alike.
ATF Compliant
We maintain a Class 7 Federal Firearms license (FFL) and a Class 2 Special Occupational Tax (SOT).
Experience
With almost three decades in business, we’ve continually evolved to stay current with industry demands. Our commitment to innovation has driven significant advancements in technology, automation, and precision machining.
- Cutting-Edge Technology – We utilize the latest in CNC machining, automation, and advanced manufacturing techniques to ensure consistency, accuracy, and superior quality in every product.
- Automation & Efficiency – By integrating automated processes, we enhance production speed while maintaining the tight tolerances demanded by precision firearms components.
- Skilled Workforce – Our team of highly trained machinists, engineers, and gunsmiths bring years of expertise to every stage of production, ensuring that our products meet the highest standards.
Values
We take pride in our South Dakota roots and the values that have guided us from the beginning—integrity, quality, and a commitment to our customers. As we continue to push the boundaries of design and manufacturing, we remain dedicated to producing firearms components that stand the test of time.