The Kel-Tec RDB (Rifle, Downward-ejecting, Bullpup) is an American semi-automatic rifle.
The RDB was created in 2014, and is of a similar design to the larger RFB.
The RDB looks very similar to the RFB, but instead of ejecting forward, the weapon ejects downwards behind the magazine. The RDB is chambered in 5.56×45mm NATO instead of 7.62×51mm NATO that is chambered in its larger brother. The rifle has an adjustable gas system for recoil control, and its barrel has a 1/7" twist.
Variant of the RDB with wooden furniture.