Kel-Tec RDB Defender Features Like no ordinary bullpup the RDB series of rifles redefines the platform. You've never experienced balance or a trigger quite like this in any other design. The RDB is completely ambidextrous due to its patented downward-ejection magazine catch/release placement intuitive safety and reversible operating handle. The RDB series of bullpups delivers a 5.56/.223 ballistic advantage in a very compact package that's easy to manipulate for just about anyone. Kel-Tec RDB Defender Specifications Brand: Kel-Tec Caliber: 5.56 NATO Model: RDB Series: Defender Barrel Length: 16