Kel-Tec RDB Defender

Brand Name: Kel-Tec
Model: Defender
Action Type: Semi-Automatic
Caliber/Gauge: 5.56 NATO
Barrel Length: 9.2"
Capacity: 10+1 rounds
This gun comes with: (1) 10-round magazine, box

 

The Kel-Tec RDB Defender is a compact bullpup powerhouse chambered in 5.56 NATO, featuring a short 9.2" barrel in a highly maneuverable, forward-thinking design. Engineered for balance, control, and reliability, the RDB (Rifle Downward-ejection Bullpup) series stands apart with its downward shell ejection, making it fully ambidextrous and ideal for tight quarters or left-handed shooters.

Despite its compact profile, the Defender delivers excellent ballistic performance from its 1:7 twist barrel, along with a full-length top rail for optics and a textured handguard with M-LOK slots for accessories. Its intuitive controls and unique gas-piston operating system ensure smooth cycling and enhanced reliability even in adverse conditions.

Specs:

  • Caliber: 5.56 NATO / .223 Remington

  • Barrel Length: 9.2" (1:7 twist, threaded)

  • Action: Semi-automatic, short-stroke gas piston

  • Capacity: Accepts standard AR-15 magazines

  • Ejection: Downward (fully ambidextrous)

  • Overall Length: Approx. 22.5"

  • Weight: Approx. 5.8 lbs

  • Features: M-LOK handguard, top Picatinny rail, ambidextrous controls

Built for mobility and mission readiness, the Kel-Tec RDB Defender redefines the compact 5.56 platform with innovation and performance in a truly ambidextrous package.