| Brand | Kel-Tec |
| SKU | — |
| UPC | — |
| Action | Semi-Automatic |
| Finish | Green |
| Sights | Standard Sights |
| Weight | 5.25 pounds |
| Capacity | 20+1 |
| Grip Safety | No |
| Optic Ready | Yes |
| Barrel Length | 16.1 inches |
| Manual Safety | Yes |
| Overall Length | 26.1 inches |
| Caliber / Gauge | 5.56 NATO, .223 Remington |
| Threaded Barrel | Yes |
| Ambidextrous Safety | Yes |
| Condition | New |
Kel-Tec RDB Defender Bullpup 5.56 NATO Green Rifle
Firearms ship to the FFL dealer you name at checkout. Price and stock are re-checked live when you order.
The Kel-Tec RDB Defender is a compact bullpup rifle chambered in 5.56 NATO and .223 Remington. Its rear-mounted action and 16.1-inch barrel provide a full-length rifle barrel in a compact 26.1-inch overall package. The gas-operated semi-automatic design feeds from AR-15 pattern magazines and accepts a 20-round magazine for a 20+1 capacity. A green finish, M-LOK forend, optics-compatible top rail, folding sights, and threaded muzzle support a flexible setup for range use, training, and practical rifle applications.
Key features
- Bullpup configuration delivers a full-length 16.1-inch barrel in a compact 26.1-inch overall length.
- Chambered in 5.56 NATO and .223 Remington for broad ammunition compatibility.
- Gas-operated semi-automatic action provides fast follow-up shots.
- 20+1 capacity uses widely available AR-15 pattern magazines.
- M-LOK forend supports compatible lights, grips, and other accessories.
- Optics-compatible top rail allows red dots or other aiming systems to be added easily через a standard mounting system.
The Kel-Tec RDB Defender combines compact bullpup handling with familiar AR-15 magazine compatibility and adaptable accessory mounting.
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