Specifications: - Caliber: 223 Remington/5.56 NATO - Action: Semi Automatic, Gas Impingement System - Capacity: 10+1 - Safety: Manual Lever with Indicator Markings on Both Sides of Receiver - Receiver: A4 Type Flat Top Upper Receiver - Receiver Material: Forged 7075 T6 Aircraft Aluminum with Aluminum Trigger Guard - Receiver Finish: Hardcoat Black Anodize Finish - Bolt Material: Carpenter 158 Steel - Barrel: 16" M4 Profile, Chrome Lined with Crowned Muzzle - Barrel Material: 4150 Chrome Moly Vanadium 11595E Steel with M4 Feed Ramps - Rifling: 1-9" - Right Hand Twist - Stock: Thordsen Stock (New York Compliant) - Forend: M4 Double Heat Shield Handguards - Rear Sight: None - Ready for optics or other type accessory sights - Front Sight: None - Picatinny Rail Gas Block