This project kit includes all of the following high-quality parts.

• 20" Chromoly Steel Heavy Barrel Profile 1:9 Twist Barrel
• Premium Bolt Carrier Group, Phosphated, Chrome Lined, MPI & HPT Tested
• Precision Stripped Upper Receiver - 7075-T6 Aluminum
• Precision Low Profile .750 Gas Block
• Stainless Gas Tube with Roll Pin
• Target Crown Barrel
• Mil-Spec Charging Handle
• Dust Cover Door Assembly with Pin, C-Clip and Spring
• Forward Assist with Spring and Roll Pin
• Complete Mil-Spec Lower Parts Kit
• Mil-Spec 7075-T7 Aluminum Buffer Tube - Black Hard Coat Anodized
• Mil-Spec 6-Position Carbine Adjustable Stock - Friction Lock Type Stock
• Buffer Spring
• Carbine Buffer
• Mil-Spec Castle Nut 
• Mil-Spec End Plate
• Choice of Rail System

* 80% Lower Recevier Included, this is a non FFL item and can be delivered directly to your door.