The NSR handguard was designed with the goal of being the lightest and smallest free floating forend option to the M16 family of weapons. The width of the NSR handguard before accessories have been installed is only 1.48" The NSR handguard is available for sale as standard equipment on our rifles and upper assemblies, as well as a separate component for sale to the public. Available in 7", 9", 11", 13.5", 15" and 16.7" lengths. The KeyMod inter-locking rail system is a collaboration between Vltor Weapon Systems and Noveske Rifleworks. Separately, both companies were in development of their own systems, but later realizing that both systems were similar, a standardization of the KeyMod system came to be. The KeyMod system offers a mounting platform for a variety of (future) accessories and components. The days of the Picatinny Rail (MIL-STD-1913) are numbered. The future of the direct mountable accessory is here and now. The KeyMod self-contained components/mounting hardware index and V-block onto the platform, achieving a secured and accurate hold to the system, while separate lugs take the recoil force off the fasteners. The pass through attachment method eliminates the need for loose screws and backing plates that can easily be lost, or difficult to install. Another advantage of the KeyMod system over the 1913 system is the direct attach eliminates the need for the 1913 system as a "middle Man" thereby reducing weight and accessory off-set from the center of the handguard.