The AR-STONER(TM) Nitride Bolt Carrier Group is a great option for your next LR-308. Machined to strict mil-spec tolerances, this bolt carrier group is drop-in ready. The Nitride finish provides enhanced reliability and is more resistant to wear. With a 308 Winchester bolt face, this Bolt Carrier Group is ideal for your next LR-308 Marksman Rifle.Note: Upon installation, headspace should be verified by a qualified gunsmith. FeaturesCarrier Machined from 8620.308 Bolt Machined from 9310Forged Gas Key Properly StakedS7 Tool Steel ExtractorHeavy Duty Extractor SpringGrade 8 hardwareShot Peened BoltHPT/MPI