The DDM4v11 Pro Series Upper Receiver Group was designed for competitors looking for the platform to dominate podiums in today's popular multi-gun matches. Built around our newest 18" Strength to Weight, Cold Hammer Forged barrel, this platform delivers the speed, controllability, and precision required to engage the course designer's most difficult stages. The new SLiM Rail 15.0, which offers incredible weight savings as well as superior cooling, ergonomics, and modularity while maintaining the strength and durability expected from Daniel Defense. An uninterrupted picatinny rail on top and KeyMod attachment at 3, 6, and 9 o'clock, ensures plenty of real estate for optics and accessories and allows for maximum sight radius for accurate shooting with rail mounted iron sights. The long, 15" rail gives operators the option to have the support hand extended out closer to the muzzle allowing them to drive the gun more precisely and prevents over travel when transitioning between multiple targets. Competitors will also appreciate the larger latch provided by a Vltor Gunfighter Mod 4 Charging Handle for easier manipulation under magnified optics. A newly designed Muzzle Climb Mitigator redirects propellant gasses through calibrated ports, countering both recoil and muzzle climb.