KAK Industry K-SPEC Enhanced Bolt Carrier Group Features The KAK Industry K-SPEC Enhanced Bolt Carrier Group uses a 9310 steel bolt a material known for handling the stress of repeated cycling better than standard 8620 steel bolts. Dual ejectors give the system two points of contact for kicking spent cases clear of the ejection port which helps reduce stovepipes and failures to eject. Downward gas vents direct carbon and gas away from the shooter s face a meaningful improvement for rifles running suppressed where back pressure increases substantially. Angled carrier rail cuts further reduce the buildup of fouling inside the receiver keeping the action running smoother between cleanings. A Flat Dark Earth PVD finish coats the carrier for a durable low-friction surface that resists corrosion and wear far better than basic phosphate coatings. The bore is chrome lined for easier cleaning and extended service life a detail that matters for anyone putting high round counts through their rifle. Built to a full auto bolt profile this BCG is compatible across a wide range of AR-15 style builds regardless of barrel length or gas system. Shooters chambered in 5.56 NATO or .300 AAC Blackout looking for a dependable plug and play upgrade will find the K-SPEC Enhanced ready to go for sale at GrabAGun. KAK Industry K-SPEC Enhanced Bolt Carrier Group Specifications Manufacturer: KAK Industry Model: K-SPEC Enhanced Type: Bolt Carrier Group Compatible Hosts: AR-15 5.56 NATO / .300 AAC Blackout Bolt Material: 9310 Steel Finish: PVD Color: Flat Dark Earth Features: Dual Ejectors Downward Gas Vents Chrome Lined Bore Available At: GrabAGun