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The RDB™ is the new definition of bullpup. Its downward shell ejection system eliminates the side ejection disadvantage of ordinary bullpups. The result is brass and gas that eject out of your line of sight making it a truly ambidextrous, high performance rifle for everyone. It’s definitely the bullpup done right.

The RDB (Rifle Downward-eject Bullpup) features a rotary bolt with a spring loaded ejector and an extractor facing down. The spent case is pulled backwards along the top of the magazine and then ejected through a vertical chute. The hammer is U-shaped and runs outside the chute and above the magazine. Obviously, the bolt travel is longer than traditional designs but well within the ergonomic constraints of a rifle. Other advantages are gravity assisted ejection and higher bolt energy at feeding. 

The RDB is built around a common steel skeleton formed by the receiver and barrel sub-assemblies. Bolt, bolt carrier, firing mechanism, ejector chute and bolt stop are identical for all variations. The short stroke gas operated piston is fully adjustable for different ammunition's and muzzle attachments.


Calibre:  .223Rem

Magazine Capacity:  5 or any AR15 compatible magazine

Colour:  Black

Weight Unloaded:  6.7lbs

Barrel Length:  20"

Note:  Scope Not Included

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Kel-Tec RDB .223 Rem 20" Barrel Semi Auto Rifle

  • Brand: Kel-Tec
  • Product Code: KELGRDB20BLKC
  • Availability: In Stock
  • $1,549.95

Tags: Kel-Tec, RDB, .223 Rem, 20" Barrel, Semi Auto, Rifle, Non-Restricted Tactical Rifle, Firearms, Kel Tec, Keltec