Engineered for consistent function across varied conditions, the LBE Unlimited LBE 556 BOLT CARRIER GROUP NIB promotes reliable operation. Built with aligned components and careful tolerances, the LBE Unlimited LBE 556 BOLT CARRIER GROUP NIB supports smooth mechanical behavior.\n\nDeveloped for shooters who value predictable performance during regular practice, the LBE Unlimited LBE 556 BOLT CARRIER GROUP NIB offers practical handling. LBE Unlimited is known for its commitment to quality and reliability in product development.\n\n- Manufacturer: LBE Unlimited\n- Model: LBE 556 BOLT CARRIER GROUP NIB\n- Product Type: Bolt Carrier Group\n- Material: Nickel Boron Coated 8620 Steel\n- Unique Features: Complete BCG with firing pin, retaining pin, cam pin, extractor, and bolt gas rings\n- What's In The Box: Complete BCG