Kel-Tec RDB

The Kel-Tec RDB (Rifle, Downward-ejection, Bullpup) is a bullpup carbine offered for various calibers (including .308 and 5.56×45mm NATO) semi-automatic rifle, manufactured by Kel-Tec Industries of Florida. It uses a rotary bolt with a spring loaded ejector and an extractor facing down, ejecting spent shell casings downward, allowing easy ambidextrous use.

Kel-Tec RDB-17 with an angled grip, flip up Iron Sights, and Trijicon MRO
TypeSemi-automatic rifle
Place of originUnited States
Production history
DesignerGeorge Kellgren
VariantsRDB, RDC-C[1]
Mass6.7 lb (3.0 kg) (RDB-17)
7.1 lb (3.2 kg) (RDB-20)[2]
Length27.3 in (693 mm)[2]
Barrel length17.2 in (437 mm) (RDB-17)
20 in (520 mm) (RDB-20)[2]
17.4 in (440 mm) (M43)[3]

Cartridge5.56×45mm NATO
ActionGas-operated, rotating bolt[4]
Rate of fireSemi-automatic



The Kel-Tec M43 is a similar design replacing polymer parts with parkerized steel or with wood for the stock furniture. The M43 is fitted with integral folding sights, and accepts standard AR-15 magazines. It features an ambidextrous bolt release, a manually locked back charging handle, and a heat shield over the short stroke piston.[3]

See also


  1. "Shot Show 2016 – Kel Tec RDB-C". Soldier of Fortune. Retrieved 2017-02-13.
  2. "The Kel Tec RDB". Kel-Tec. Retrieved 2017-02-13.
  3. "M43 BULLPUP". Blue Book of Gun Values. Retrieved 28 October 2017.
  4. "RDB-17 Manual" (PDF). Kel-Tec. Retrieved 2017-02-13.
  5. ""New From Kel-Tec: KSG-25, RDB Survival – SHOT Show 2017"". Truth about Guns. Retrieved 2017-02-13.
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