Faxon ARAK-21 Complete Upper 5.56 NATO 16" Tungsten

The Faxon ARAK-21 is a complete AR-15 upper receiver kit chambered in 5.56 NATO, built around a 16" barrel. This innovative system features a piston-driven operating mechanism for enhanced reliability and reduced fouling. The upper receiver features a tungsten finish for superior durability and corrosion resistance. The ARAK-21 design incorporates a side-folding stock capability and accepts standard AR-15 magazines and accessories. This complete upper assembly is ready to install on any mil-spec AR-15 lower receiver.