Description
The Kel-Tec RDB is a bullpup rifle engineered around a downward-ejection system that routes spent cases out of the shooter’s line of sight, supporting true ambidextrous operation. Its compact layout places the center of gravity near the grip for balanced handling. The design includes an adjustable short-stroke gas piston to tune cycling for a range of loads and suppressor use, plus integral mounting options for optics and accessories. This model is finished in black with polymer furniture and is compatible with AR-15 style magazines.
Key Specifications
- Chambered for .223 Rem / 5.56 NATO.
- Action type is Semi-automatic.
- Finished in black (blued/black finish noted in sources).
- Stock and major external components use polymer construction.
- Barrel rifling twist rate listed as 1:7″ in supplied materials.
- Features a downward ejection system for true ambidextrous use.
- Employs a fully adjustable gas piston system to tune cycling and suppressor use.
- Compatible with AR-15 style magazines.
- Includes MIL-STD-1913 (Picatinny) rails for optics and accessories.
- Equipped with a birdcage-style flash hider on the muzzle (per provided data).
The RDB blends compact bullpup ergonomics with practical features like downward ejection, adjustable gas, and MIL‑STD rails to serve as a versatile modern sporting rifle platform. Its ambidextrous layout and accessory-ready configuration make it a logical choice for someone seeking a compact, configurable rifle built around real-world handling and modularity.





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