Kel-Tec RDB-S Tactical Bullpup Rifle, .223/5.56, OD Green
The Kel-Tec RDB-S Tactical Bullpup Rifle, .223/5.56, OD Green is a 5.56 NATO bullpup rifles from Kel-Tec. It is available from 13 vendors at $759.99 to $871.49.
Product Information
Name: Kel-Tec RDB-S Tactical Bullpup Rifle, .223/5.56, OD Green
Brand: Kel-Tec
Category: Bullpup Rifles
Caliber: 5.56 NATO
Barrel Length: 16.1"
Capacity: 20 rounds
UPC: 640832007503
SKU: UCBHUnnN1
Description
The Kel-Tec RDB-S is a semi-automatic bullpup rifle chambered in .223 Rem / 5.56 NATO with a 16.1-inch barrel. Its bullpup layout puts the action behind the trigger, resulting in a 26.1-inch overall length with a full-length barrel. It weighs 5 lbs 14 oz, has a 20+1 capacity, and is finished in OD Green polymer with a salt bath nitride barrel.
Key Specifications
- Model: RDB-S
- Caliber: .223 Rem / 5.56 NATO
- Barrel Length: 16.1 inches
- Overall Length: 26.1 inches
- Capacity: 20+1 rounds
- Weight: 5 lbs 14 oz (5.14 lbs)
- Finish: Green Polymer with Salt Bath Nitride barrel finish
- Safety: Manual Thumb Safety
- Sights: Adjustable front and rear sights with optic-ready rail
Features
The bullpup configuration keeps the overall length at 26.1 inches while running a 16.1-inch barrel, which is more compact than a traditional rifle with the same barrel. Ambidextrous controls are built in. The RDB-S accepts standard AR-15 magazines, including the included 20-rounder. The optic-ready top rail takes any standard mount. The salt bath nitride barrel finish resists corrosion. Adjustable folding iron sights come installed.
Complete Specifications
| Caliber | 5.56 NATO |
| Model | RDB |
| Capacity | 20 rounds |
| Magazines included | 1 |
| Barrel length | 16.1" |
| Overall length | 26.1" |
| Weight | 82.24 oz |
| Action | Semi Auto |
| Finish | Salt Bath Nitride |
| Color | Black |
| Stock type | Bullpup |
| Stock material | Zytel |
| Sights | Flip Up Front & Rear |
| Safety | Manual Thumb |
Frequently Asked Questions
What caliber is the RDB?
The RDB is chambered in .223 Rem / 5.56 NATO.
Who makes the RDB?
The RDB is made by Kel-Tec.
What type of firearm is the RDB?
It is a semi-automatic bullpup rifle with an OD Green polymer finish.
What is the barrel length of the RDB?
The RDB has a 16.1-inch barrel.
How many rounds does the RDB hold?
It has a 20+1 capacity.
Is the RDB optic-ready?
Yes, it has an optic-ready top rail that accepts standard mounts.
Where can I buy the RDB?
Compare current vendor offers on this page.
What Reviewers Say
Quoted verbatim from YouTube reviews. Each link opens the video at the moment quoted.
Hand guard heated up like crazy i have never felt the gun this hot before.
The recoim pulse was extreme i'm not really sure why that is but by comparison to something like the geisley super duty 10 and a half inch this has triple the recoil.
Springfield hellion is significantly superior to this gun in my personal opinion and springfield is a company i like less than i like kel-tec.
Recoiling pulse as far as uh ergonomics as far as overall accuracy and ease of use this gets a solid f from me.
Customers Say
AI-generated insights derived from customer reviews and discussions on popular gun-enthusiast forums.
The Kel-Tec RDB-S draws a predictable mix of enthusiasm about the format and skepticism about early-production reliability.
The bullpup layout is the main attraction. The compact overall length with a full-length barrel appeals to shooters who want maneuverability without going to a short-barrel configuration. At under 27 inches with a 16.1-inch barrel it's noticeably shorter than a standard AR-15.
Ambidextrous controls and compatibility with standard AR-15 magazines are consistently cited as practical advantages.
Reliability concerns show up regularly in discussions, particularly around certain ammunition types and rapid-fire strings. Some early adopters reported fitment and function issues out of the box, and this has tempered overall enthusiasm.
Adaptation to the bullpup control layout takes time for shooters accustomed to conventional rifles. Magazine changes and charging handle placement require different muscle memory.
Aftermarket accessory options are more limited compared to established platforms like the AR-15, which matters for owners who want to customize extensively.
Overall sentiment is positive for the concept but split on execution, with opinions varying based on individual production runs and experiences.
Where to Buy - 13 Offers Available
Price Range: $759.99 - $871.49
| Vendor | Price | Condition | Link |
|---|---|---|---|
| Grabagun Com | $759.99 | New | Buy Now |
| Shootingsurplus Com | $769.35 | New | Buy Now |
| Gritrsports Com | $769.99 | New | Buy Now |
| Kygunco Com | $779.7 | New | Buy Now |
| Buds Gun Shop | $783.49 | New | Buy Now |
| Centerfiresystems Com | $809.99 | New | Buy Now |
| Impactguns Com | $815.29 | New | Buy Now |
