CMMG M16/AR15 Bolt Carrier Group - Complete Mil-Spec M16 bolt carrier group for 5.56mm/.223 and 300 BLK; Bolt: 9310 Steel, Phosphate Finish; Carrier: 8620 Steel, Chrome Lined, Phosphate Finish; Extractor: 4140 Steel, Phosphate Finish; All CMMG products come with our Lifetime Quality Guarantee; - At Sportsman's Warehouse, we live for the thrill of the great outdoors. Whether you're hunting, fishing, camping, backpacking, or shooting, having the right gear is key to making every moment unforgettable. That's why we bring you only the highest quality, trusted brands-because your outdoor experiences deserve the best. From expert advice to quality gear and community events, Sportsman's Warehouse is more than a store-we're your partner on every journey. Come explore with us and experience the difference passion makes.