KAK Industry Complete Assembled Bolt Only 5.56x45mm/.300 AAC Blackout, Silver

The K-Spec dual ejector system is a key upgrade for AR-15 users, offering increased reliability and consistency in ejection patterns. By using mil spec ejectors and springs, KAK ensures that no proprietary parts are necessary, making it easier to maintain and replace components when needed. The ejector holes are carefully centered on the lugs to maintain the bolt's structural integrity, preventing any strength reduction. With over a decade of experience manufacturing dual ejector bolts for the AR10/LR308 platform, KAK has brought that expertise to the AR-15, delivering a proven, durable solution to enhance ejection performance, especially in high-demand environments. Bolt made from 9310 steel with outside diameters ground to .0002 tolerances, MPI tested for quality assurance and finished with a heavy chrome coating for superior durability and wear resistance Extractor made from 4140 steel, fully machined for precision and phosphate-coated for enhanced durability and corrosion-resistance Extractor pin made from S7 tool steel, precision ground and heat-treated for maximum strength and durability Ejector made from S7 tool steel, precision ground and heat-treated