5.56 NATO Complete Upper Assembly | 11.5" Parkerized M4 Barrel| 1:7 Twist |

Key Features & Performance Highlights

• 5.56 NATO Caliber Versatility: Chambered in 5.56 NATO, offering complete cross-compatibility to safely shoot both 5.56mm and .223 Remington ammunition.
• 11.5-Inch M4 Contour Barrel: Crafted from high-grade 4150 Chrome Moly Vanadium steel with a heavy-duty Parkerized finish for superior corrosion resistance and longevity.
• 1:7 Twist Rate: Perfectly optimized to stabilize heavier grain bullets (62gr to 77gr) for maximum downrange accuracy and ballistic performance.
• Carbine-Length Gas System: Fitted with a 0.750 gas block diameter to deliver reliable feeding, reduced felt recoil, and seamless operational cycling.
• Forged 7075-T6 Receiver & Rear Charging Design: Standard rear-charging system housed in a lightweight, ultra-tough forged aluminum upper receiver.
• Complete Assembly with BCG Included: Fully assembled from the factory with a complete Bolt Carrier Group (BCG) and charging handle—ready for drop-in installation out of the box.

Technical Specifications