KAK Industry K-SPEC Enhanced Bolt Carrier Group Features The KAK Industry K-SPEC Enhanced Bolt Carrier Group is built for AR-15 platforms chambered in 5.56 NATO or .300 Blackout packing several reliability upgrades into a single drop-in unit. Dual ejectors reduce the chance of a failure to extract by giving the action two points of contact with the spent case a benefit that shows up most under harsh or suppressed conditions. Angled carrier rail cuts and downward gas ports direct carbon and gas away from critical wear surfaces helping the action run cleaner over extended strings of fire. A full auto bolt carrier profile adds mass for smoother cycling regardless of the rifle s configuration. The 9310 steel bolt is paired with an NP3 finish a nickel-based coating that reduces friction between the bolt and carrier while resisting fouling and corrosion. That lower-friction surface also simplifies cleaning after a session at the range since carbon buildup does not bond as readily to the treated surface. Finished in a silver tone that stands out against a standard black AR-15 build the K-SPEC is designed to drop straight into an existing upper with no additional fitting required. AR-15 owners looking for a genuine plug and play reliability upgrade whether running suppressed or unsuppressed will find the K-SPEC a solid choice available for sale at GrabAGun. KAK Industry K-SPEC Enhanced Bolt Carrier Group Specifications Manufacturer: KAK Industry Model: K-SPEC Enhanced Bolt Carrier Group Type: Bolt Carrier Group Color: Silver Finish: NP3 Coating Bolt Material: 9310 Steel Compatible Hosts: AR-15 5.56 NATO .300 Blackout Available At: GrabAGun