The Daniel Defense M4 Carbine V11, based on the popular V9 series, was designed for shooters who prefer the benefits of the KeyMod system integrated in the SLiM Rail. KeyMod is a recoil resistant, two-part, direct attachment method for accessories that offers outstanding "return-to-zero" when accessories are removed and reinstalled. The new SLiM Rail 15.0 offers incredible weight savings as well as superior cooling, ergonomics, and modularity while maintaining the strength and durability expected from Daniel Defense. 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. This combined with our mid-length gas system, which is known to have a smoother recoil impulse, allows for quick, but precise rapid fire. An uninterrupted picatinny rail on top and KeyMod attachment at 3, 6, and 9 o'clock, ensures plenty of real estafor oThe Daniel Defense M4 Carbine V11, based on the popular V9 series, was designed for shooters who prefer the benefits of the KeyMod system integrated in the SLiM Rail. KeyMod is a recoil resistant, two-part, direct attachment method for accessories that offers outstanding "return-to-zero" when accessories are removed and reinstalled. The new SLiM Rail 15.0 offers incredible weight savings as well as superior cooling, ergonomics, and modularity while maintaining the strength and durability expected from Daniel Defense. 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. This combined with our mid-length gas system, which is known to have a smoother recoil impulse, allows for quick, but precise rapid fire. 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 new independently ambi GRIP-N-RIP Charging Handle accommodates left- and right-handed shooters and is engineered for suppressed fire, with anti-gas features that redirect gas flow upward and away from the face and operator. The rifle is finished off with the rugged and comfortable Daniel Defense Buttstock and Pistol Grip.ptics andThe Daniel Defense M4 Carbine V11, based on the popular V9 series, was designed for shooters who prefer the benefits of the KeyMod system integrated in the SLiM Rail. KeyMod is a recoil resistant, two-part, direct attachment method for accessories that offers outstanding "return-to-zero" when accessories are removed and reinstalled. The new SLiM Rail 15.0 offers incredible weight savings as well as superior cooling, ergonomics, and modularity while maintaining the strength and durability expected from Daniel Defense. 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. This combined with our mid-length gas system, which is known to have a smoother recoil impulse, allows for quick, but precise rapid fire. 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.