Daniel Defense M4A1 Upper Receiver Group with 14.5-inch Cold Hammer Forged Barrel in Flat Dark Earth

Daniel Defense M4A1 Upper Receiver, 223 Rem/556NATO, 14.5 Barrel (16 OAL with Pinned Brake), Carbine Length Gas System, 1:7 Twist, M4 12.0 Rail, Flat Dark Earth Finish, Fits AR 23-004-13150 The Daniel Defense M4A1 Upper Receiver Group offers a precision-engineered platform designed for optimal performance and reliability in demanding environments. Featuring the renowned M4A1 Rail Interface System (RIS II), this upper is in use by US Special Operations Command (SOCOM) since 2005, ensuring proven durability and versatility. The RIS II system's two-piece, free-floating design allows for secure mounting of accessories like grenade launchers without affecting barrel harmonic stability, eliminating accuracy issues common with other mounting systems. The modular design also simplifies cleaning and maintenance by permitting partial disassembly, making it easier to keep the firearm in top condition. The sturdy bolt-up system, supported by six grade 8 bolts, guarantees that attached devices are securely held while keeping the barrel free-floating for enhanced accuracy and dependability. The upper features a 14.5-inch Cold Hammer Forged M4 Profile barrel with a permanently attached Daniel Defense Improved Flash Suppressor, meeting the 16-inch length requirement for NFA compliance. Complete with an M16 profile bolt carrier group, this upper is built for durability and precision. The Flat Dark Earth finish provides a low-profile, tactical appearance suited for various operational scenarios, making it an ideal choice for both professional and recreational shooters seeking high-performance components. Whether upgrading an existing rifle or building a new one, the Daniel Defense M4A1 Upper Receiver Group delivers exceptional quality and performance for demanding applications. Features: * M4A1 Rail Interface System (RIS II): Two-piece, free-floating design for accessory mounting without impacting barrel harmonics * Bolt-up system: Supports attached devices with six grade 8 bolts for secure fit and stability * Barrel: 14.5-inch Cold Hammer Forged M4 Profile for durability and precision * Barrel length: Pinned to meet 16-inch NFA compliance * Flash Suppressor: Daniel Defense Improved Flash Suppressor permanently attached * Compatibility: Includes M16 profile bolt carrier group for reliable operation * Finish: Flat Dark Earth for tactical appearance and low visibility * Caliber: 223 Remington, suitable for various applications