The Daniel Defense M4 Carbine V11 Lightweight, based on the popular V9 series, was designed for shooters who prefer the benefits of the KeyMod system integrated with DD's SLiM rail system. 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 SLiM (Slim Lightweight Modular) 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 the 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 DDM4v11 LW is equipped with a free-floating, cold hammer-forged, 16" lightweight profile barrel, making it almost 5 ounces lighter than the standard V11. This rifle also includes the rugged and comfortable Daniel Defense buttstock and pistol grip with six positions of LOP adjustment. QD sling points. 1 in 7" twist.