Franklin Armory F17-X Complete Upper Receiver .17 WSM 16" Threaded Barrel, Black - 00-40074-BLK

This Franklin Armory complete upper receiver is a piston-driven AR-15 compatible upper chambered in .17 Winchester Super Magnum, featuring a 16" threaded barrel and 20-round magazine capacity. The R2 design incorporates an Osprey Defense slim piston system that automatically adjusts for suppressed or unsuppressed use without manual adjustments. Constructed from steel and aluminum, it installs directly onto any mil-spec AR-15 complete lower receiver.