A completely assembled, ready to install AR-15 Bolt* and Carrier System, including an Upper Receiver and charging handle for extreme duty use. Kit includes eight critical parts that are treated with EXO Technology, a revolutionary surface technology that provides permanent dry lubricity, radically improves performance of your AR-15 and eliminates the need to apply oil or grease to treated parts for the life of the weapon. Treated parts include:

• Upper Receiver
• Charging Handle
• Bolt
• Bolt Carrier
• Hammer
• Extractor
• Cam Pin
• Carrier Key