Kel-Tec RDB Survival 5.56mm NATO Bullpup Semi-Auto Rifle – 16" Threaded Barrel, Adjustable Gas, Folding Sights
The Kel-Tec RDB Survival packs full-size 5.56mm NATO performance into one of the lightest, most compact center-fire bullpups ever mass-produced. Its patented downward-ejection system makes the rifle completely ambidextrous. With a slim, grid-textured forend, collapsible skeleton stock, and AR-15 magazine compatibility, this rifle is purpose-built for efficient carry and versatile field use.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Rifling Condition: Good Rifling – Intact, well-defined lands and grooves.
Specific Condition Notes: Minor superficial scratches and blemishes are present. The front sight retention spring is broken. The bore remains clean and shiny.
What’s Included
- Magpul PMAG Gen M3 30-round polymer AR-15 magazine
- Black nylon two-point sling (installed)
The RDB Survival’s serialized monocoque polymer receiver houses only 24 parts, making field maintenance straightforward and fast. Kel-Tec’s rod-link trigger delivers a crisp 4.5-lb break, an impressive figure for a bullpup layout.
The lightweight 16" pencil-profile barrel is threaded 1/2-28 TPI and comes capped with a simple threaded muzzle-nut. Combined with a 1:7 RH twist, the barrel is optimized for today’s common 55- to 77-grain 5.56 loads.
Ambidextrous operation is inherent: the downward-ejecting chute clears spent cases away from the shooter, while bilateral controls allow flat stowage in tight packs or vehicles.
The two-position collapsible stock shortens overall length for transport or NFA compliance and includes a butt-pad and QD sling-swivel socket. Folding polymer BUIS ride on the integrated rail, ready to co-witness with optics.
Accepting standard AR-15 magazines and featuring a slim, rail-ready forend, the RDB Survival bridges familiar logistics with a uniquely compact, balanced shooting experience.



