KelTec RDB
KelTec RDB Defender 5.56x45mm 16.1in 20rd Black Bullpup Rifle
The RDB Defender is KelTec’s tactical 5.56/.223 bullpup variant built around the RDB family. The Defender ships with an aluminum M-LOK handguard, a single-position collapsible stock and a 16.1in pencil-profile barrel.
The rifle uses KelTec’s downward-ejection, fully ambidextrous design and an adjustable short-stroke gas system. It accepts AR-15 (STANAG) magazines (standard 20-round capacity) and includes MIL-STD-1913 Picatinny rails for mounting optics and accessories.
Factory specifications list a 6.7 lb unloaded weight, an overall length of 27 in and a black finish. The Defender is offered as a lightweight, tac…

Specifications
| UPC | 640832008081 |
|---|---|
| Brand | KelTec |
| Model | RDB |
| Caliber | 5.56x45mm (.223 Rem) |
| Series | Defender |
| Mfg Part Number | RDBDBLK |
| Capacity Standard | 20 |
| Barrel Length | 16.1in in |
| Capacity | 20rd |
| Overall Length | 27in |
| Finish | Black |
| Grip | Synthetic Black |
| Weight | 6.7 lbs lbs |
| Purpose 1 | Personal Defense |
| Purpose 2 | Duty / Professional Use |