Kel-Tec RDB 5.56 Bullpup Rifle - 17"

Manufactured by Kel-Tec
Manufactured by Kel-Tec
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Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal-Firearm License holder.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers.
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to



The Kel Tec RDB is a full size rifle in a very compact package that’s easy to manipulate for just about anyone. The RDB stands for Rifle Downward-ejecting and represents the perfect 5.56, light-duty, tactical bullpup. It’s lightweight, comes standard with an aluminum, M-LOK handguard and 17.3” pencil profile barrel. The RDB trigger is incredibly smooth, with a nice take-up and clean break. Combined with a 1:7 twist barrel, all RDB models offer excellent accuracy. This unrivaled design sends spent brass downward through the stock, behind the magwell and is fully ambidextrous. The RDB is completely ambidextrous due to its patented downward-ejection, magazine catch/release placement, intuitive safety and reversible operating handle. Gone are the days of hot gas & brass flying out of a side-ejection port. All of the RDB models operate off of the same adjustable gas piston system. This feature allows the user to tailor the bolt carrier speed to eliminate excessive recoil while running a suppressor and ensure reliability for various loads.

  • 5.56 NATO/.223 Rem
  • 17.3” pencil barrel
  • 1:7 twist
  • Downward ejection
  • M-LOK handguard
  • Adjustable gas piston system
  • Black polymer frame
  • Includes 20 round mag
  • AR-15 magazine compatible
Kel-Tec CNC, Inc. is firmly committed to the innovation, development and production of original, unique, high-performance firearms. Specializing in ground-breaking rifle designs and handguns for concealed carry by law enforcement personnel and qualified citizens, Kel-Tec is now one of the top five handgun makers in the USA, and one of the largest in the world.
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Barrel Coating
Barrel ContourPencil
Barrel Length17.3
Caliber Gauge5.56 NATO
Gas System TypeShort Stroke Gas Piston
Muzzle DeviceA2 Flash Hider
Thread Pattern1/2 X 28
Twist Rate1:7
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

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