The Kel-Tec RDB Defender is a bullpup semi-automatic rifle configured for .223 Rem / 5.56 NATO with a 16.1-inch pencil-profile barrel. The design incorporates an aluminum M-LOK handguard and a black synthetic collapsible stock. Kel-Tec’s downward-ejection system and ambidextrous controls provide fully reversible handling characteristics for right- and left-handed users.
Key Specifications
- The rifle is chambered in .223 Rem / 5.56 NATO.
- The barrel measures 16.1 inches and uses a pencil profile.
- The action is semi-automatic.
- The forend is an aluminum M-LOK handguard.
- The stock is a collapsible black synthetic design.
- The rifle employs downward ejection for ambidextrous operation.
- The rifling twist rate is 1:7.
- The design accepts standard AR-15 pattern detachable magazines.
- The barrel is listed as having an 1/2×28 threaded pattern where applicable.
- The exterior finish is black / blued.
The RDB Defender combines a short overall package with a full-length barrel profile, adjustable gas system, and Kel-Tec’s downward-ejection ergonomics to provide a compact, versatile rifle option. Its ambidextrous controls and M-LOK forend make it adaptable for a range of shooting applications where a maneuverable, full-ballistics platform is preferred.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
