KAK Industry was founded and incorporated in 2011 by Kurt Kosman with a vision to revolutionize the firearms market by providing high-quality, American-made components at prices that ensure both affordability and long-term sustainability. Built on a foundation of precision engineering and unwavering craftsmanship, KAK Industry has become a trusted name among firearm enthusiasts, builders and manufacturers. Every component is designed and manufactured with meticulous attention to detail, ensuring exceptional performance, durability and reliability. With a steadfast commitment to innovation and excellence, KAK Industry continues to set new standards in the industry, delivering products that shooters can depend on in any situation. Heat-treated for strength and durability, providing enhanced reliability during heavy use Phosphate-coated for corrosion-resistance, ensuring protection against rust and wear Milled flats for easy installation, simplifying setup for users Fully precision-machined in house at KAK Industry, ensuring high-quality, accurate manufacturing for optimal firearm performance Crush washer not included, allowing users to purchase separately or use existing components for optimal barrel installation