KAK Industry K-SPEC Enhanced AR-15 5.56 / 300 BLK Bolt

The KAK Industry K-SPEC Bolt is a dual ejector bolt, designed to deliver superior ejection consistency and performance without weakening the bolt lugs. Fully compatible with all Mil-Spec BCG components, the K-SPEC bolt is precision-machined from Carpenter 158 steel and ground to .0002" tolerances for peak performance. It's shot peened, MPI tested, and finished in advanced NP3 coating for superior wear, corrosion, and fouling resistance, offering cleaner operation, longer-lasting performance, and smoother cycling with direct impingement systems. Additionally, every component is machined from premium tool steel, heat-treated, and carefully assembled using Doosan machining centers, Tsugami Swiss turning, and the latest FANUC robotics and CMM inspection processes, ensuring unmatched quality and consistency. Made in USA.