The Keltec RDB-S is a compact, semi-automatic bullpup rifle chambered for .223 Remington/5.56 NATO designed for survival and backcountry applications. Its bullpup layout preserves a full-length barrel in a shorter overall package for improved maneuverability. The design is fully ambidextrous thanks to a patented downward-ejection system and reversible controls. An adjustable gas piston and a refined trigger help maintain reliable operation across varied loads and accessory configurations.
Key Specifications
- Caliber: .223 REM/5.56 NATO.
- Barrel length: 16.1″.
- Overall length: 26.1″.
- Weight (unloaded): 5 lbs 14 oz.
- Rate of twist: 1:7″.
- Action: Semi-automatic.
- Barrel finish: Black Nitride.
- Stock material: Polymer.
- Detachable magazine: Yes.
- Sights: Folding sights with integrated Picatinny rails.
The RDB-S delivers a practical mix of compact form, ambidextrous ergonomics and adjustable gas operation suited for users who need a lightweight, easily stowed rifle with full-power rifle ballistics. Its downward-ejection system and compact footprint make it a versatile choice for outdoor, survival and general utility roles where balance, handling and modularity matter.
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