Our Bolt Carrier Groups are manufactured in the United States to the highest quality standards. Featuring carriers machined from 8620 steel, forged gas keys that are properly staked using grade 8 hardware and full side-serrations. Our high-pressure bolts are shot-peened, magnetic particle inspected and high-pressure tested and feature a reduced firing pin diameter and dual ejectors to enhance reliability and durability. Our extractors feature dual springs and O-rings for strong and consistent ejection