JP Enterprises Complete JPBC Bolt Carrier Group .223 Caliber is the perfect accessory for any .223 caliber rifle. This complete bolt carrier group from JP Enterprises is manufactured from high-grade steel and features a black nitride finish for enhanced wear and corrosion resistance. It includes a complete bolt, extractor, and firing pin, making it ready to install and use in your rifle. The JPBC Bolt Carrier Group is designed to provide reliable and smooth cycling, with an improved cam pin and roller to reduce friction and increase reliability. With its superior strength and durability, this complete bolt carrier group will be a great addition to your rifle.