Kel-Tec RDB-S Bullpup 5.56 NATO, 16" Green

The Kel-Tec RDB-S: Compact Power in a Bullpup Package

The RDB-S is a semi-automatic, magazine-fed rifle chambered in 5.56 NATO/.223 Remington, designed around the proven bullpup configuration. This layout delivers a full-length barrel in a compact overall package, making it ideal for shooters who value maneuverability without sacrificing ballistic performance.

Key Design Features

Ambidextrous Operation

• Fully ambidextrous controls allow you to operate the rifle effectively from either shoulder
• Downward ejection keeps the action clear of your sight picture and works equally well for left and right-handed shooters

Modular Construction

• Two integral MIL-STD-1913 Picatinny rails—one above the barrel and one on the handguard—provide standard mounting points for optics, lights, and other accessories
• The modular design supports a variety of configurations to match your specific needs

Balance and Handling

• Center of gravity positioned over the grip assembly ensures the rifle handles naturally and reduces fatigue during extended use
• 16.1" barrel with 1:7" twist rate stabilizes a wide range of 5.56 ammunition
• Collapsible stock adapts to different shooter body types and tactical situations
• Overall length of 26.1" and weight of 5 lbs 14 oz make this a genuinely portable rifle

Standard Features

• 20-round magazine capacity
• Folding sights for simplified storage and transport
• Operator Dark Earth green receiver and furniture
• Black Nitride steel barrel for durability and corrosion resistance

The RDB-S represents a thoughtful approach to modern rifle design, combining proven bullpup ergonomics with practical features that work in the real world.