Kel Tec's RDB is where functionality and fun met up. Kel Tec's RDB Rifle (downward-ejecting bullpup) features an adjustable piston driven gas system that is chambered in 5.56 Nato and is designed to take all standard AR-15 magazines. With its rear downward facing ejection port and ambidextrous controls, the RDB is perfect for any shooter. This rifle also features a high-impact resistant Zytel forend with built-in Picatinny-style rail on the top and bottom for mounting your favorite accessories. Like all of Kel Tec's RDB variants, the 17" RDB is always accurate and compact.