Kel-Tec RDB Defender Tan 5.56 NATO 16.1 in

The Kel-Tec RDB Defender is a compact bullpup rifle designed for ambidextrous use and consistent semi-automatic performance. Chambered for .223 REM/5.56 NATO, it combines a pencil-profile barrel with an adjustable gas piston system to support a range of loads and suppressed use. The design ejects spent cases downward through the stock behind the magwell for true ambidexterity. The Defender configuration includes an aluminum M-LOK handguard and a collapsible stock for compact handling.

Key Specifications

• The rifle is chambered in .223 REM/5.56 NATO.
• The barrel measures 16.1 inches with a pencil profile.
• The overall length is 27 inches for compact handling.
• The unloaded weight is 6.70 lbs.
• The twist rate is 1:7.
• The action is Semi-Auto.
• The platform is ambidextrous, including an ambidextrous safety and downward ejection.
• The handguard is aluminum with M-LOK compatibility.
• The stock is a collapsible polymer design for adjustable ergonomics.

The RDB Defender pairs compact bullpup balance with practical features — ambidextrous controls, an adjustable gas system, and an M-LOK handguard — making it a capable option for shooters who value efficient, user-focused design in a compact package.