Kel-Tec RDB Rifle 5.56 NATO — 20″ Barrel, Black

About this product

The Kel‑Tec RDB is a compact bullpup semi-automatic rifle engineered for balanced handling and fully ambidextrous operation. Chambered for .223 Rem/5.56 NATO and finished in black, the RDB uses a downward ejection system to keep spent cases away from the shooter’s face. It features an adjustable gas piston and a refined trigger system intended to improve shot-to-shot control while accepting standard AR‑15 magazines. Some source details list the barrel as 20 inches while others list 20.5 inches—see notes for conflicting data.

Key Specifications

• The rifle is chambered in .223 Rem/5.56 NATO.
• The action is Semi-automatic.
• The barrel is listed as 20 inches in several sources (some sources list 20.5 inches).
• The magazine capacity is 20 rounds and it accepts standard AR‑15 magazines.
• The ejection system is downward ejection for true ambidextrous operation.
• The gas system is an adjustable gas piston to tune reliability with suppressors and varied loads.
• The twist rate is 1:7.
• The stock is a black polymer fixed bullpup design with integrated accessory rail features.
• The finish is black/blued.

Compact, well‑balanced and purposefully ambidextrous, the Kel‑Tec RDB delivers a practical modern‑sporting bullpup platform with unique downward ejection and an adjustable gas system. Its configuration is suited for shooters who want a compact rifle that accepts common AR‑15 magazines while offering adaptable gas settings and ergonomic controls for a wide range of shooting applications.

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