Viper / ACH Interlocking Long RailsInterlocking Long Rails offer a system upgrade enabling quick and easy head borne accessory attachment. Offering the ability to tailor the helmet depending on the mission at hand, the rail system allows for cameras, lights, and other accessories to be outfitted. The rails have multiple entry points and accept widely used rail bases. ***Front Mount Sold Separately*** The Interlocking Long Rail System consists of two rails which seamlessly integrate