# Kel-Tec RDB OD Green Tactical Bullpup Rifle 5.56mm NATO

**Brand:** Kel-Tec
**Category:** Bullpup Rifles
**Caliber:** .223 Remington

## Specifications

- **Caliber:** .223 Remington
- **Barrel Length:** 20.5"
- **Capacity:** 10 rounds
- **Finish:** Salt Bath Nitride
- **Weight:** 110.4 oz
- **Overall Length:** 30.4"
- **UPC:** 640832005981
- **SKU:** UCBHUnmyT

## Description

The Kel-Tec RDB is a bullpup semi-automatic rifle in 5.56mm NATO / .223 Remington. The bullpup layout puts the action behind the trigger group, so you get a 20.5" barrel in a package only 30.4" long and 6.9 lbs. The receiver is 4140 steel. It runs a fully adjustable gas piston system that handles a range of ammunition reliably. Twist rate is 1-in-7, which stabilizes heavier projectiles well. Picatinny rails are present front and rear for optics and accessories. The downward-ejecting system makes it fully ambidextrous, no brass in the face for left-handed shooters. Comes standard in OD Green with a lever safety and accepts standard STANAG magazines at 30-round capacity.

### Key Specifications
- **Manufacturer**: Kel-Tec
- **Model**: RDB
- **Type**: Modern Sporting Rifle
- **Caliber**: 5.56mm NATO / .223 Remington
- **Barrel Length**: 20.5 inches
- **Total Length**: 30.4 inches
- **Weight**: 6.9 lbs (110.4 oz)
- **Capacity**: 30 rounds (compatible with standard magazines)
- **Safety Mechanism**: Lever safety
- **Finish Color**: OD Green
- **Receiver Material**: 4140 Steel

### Features
The adjustable piston can be tuned for different loads without tools. The downward ejection port is the standout mechanical feature. It eliminates the traditional left-hand problem entirely. Picatinny rails at front and rear give optics mounting flexibility.

## Frequently Asked Questions

**Q: What caliber is the Kel-Tec RDB?**

A: The Kel-Tec RDB is chambered in 5.56mm NATO / .223 Remington.

**Q: What type of firearm is the Kel-Tec RDB?**

A: It is a semi-automatic bullpup rifle.

**Q: What is the barrel length of the Kel-Tec RDB?**

A: The RDB has a 20.5-inch barrel.

**Q: How many rounds does the Kel-Tec RDB hold?**

A: It has a 30-round capacity and accepts standard STANAG magazines.

**Q: Is the Kel-Tec RDB optic-ready?**

A: Yes. The RDB has Picatinny rails at the front and rear for mounting optics and accessories.

**Q: Does the Kel-Tec RDB have a threaded barrel?**

A: Yes, some configurations include a threaded barrel, as noted in the product listings.

**Q: Where can I buy the Kel-Tec RDB?**

A: 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.
>
> — [Honest Outlaw](https://www.youtube.com/watch?v=sFf-xOOcty4&t=689s)

> 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.
>
> — [Honest Outlaw](https://www.youtube.com/watch?v=sFf-xOOcty4&t=704s)

> 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.
>
> — [Honest Outlaw](https://www.youtube.com/watch?v=sFf-xOOcty4&t=745s)

> Recoiling pulse as far as uh ergonomics as far as overall accuracy and ease of use this gets a solid f from me.
>
> — [Honest Outlaw](https://www.youtube.com/watch?v=sFf-xOOcty4&t=809s)

## What Customers Say

*AI-generated insights from customer reviews*

Feedback on the Kel-Tec RDB tends to split pretty clearly between what the design gets right and where it falls short.

The compact bullpup layout is the main draw. Owners regularly note that getting a 20.5" barrel into a 30.4" package is a meaningful advantage for home defense and transport, and the 6.9 lb weight is easy to carry over long periods. The downward ejection system gets specific praise from left-handed shooters who can run it without modification. Ergonomics and the way it shoulders are generally well-received.

Reliability with certain ammunition is the most common complaint. Some owners report feeding failures or jams, which is a real concern if the rifle is intended for defensive use. The trigger pull is heavier and less refined than what you find on AR-15s at similar prices, and it comes up enough that aftermarket trigger upgrades are a common suggestion. Accessory selection is narrower than the AR platform, which limits customization options. Opinions on aesthetics vary. The bullpup shape appeals to some and puts others off.

Net sentiment leans positive among shooters who specifically want a compact 5.56 bullpup, but the reliability and trigger concerns are worth knowing going in.

## Pricing

**13 offers available**

| Vendor | Price |
|--------|-------|
| Gritrsports Com | $796.99 |
| Shootingsurplus Com | $797.23 |
| Kygunco Com | $807.95 |
| Buds Gun Shop | $810.99 |
| Grabagun Com | $829.99 |
| Primaryarms Com | $829.99 |
| Centerfiresystems Com | $834.99 |
| Impactguns Com | $836.99 |
| Palmettostatearmory Com | $837.99 |
| Gunbuyer Com | $846.80 |

*...and 3 more offers*

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- [Kel-Tec RDB-C Bullpup Rifle: Lightweight, 5.56 NATO, Black, 20.5"](https://gunsnation.com/p/kel-tec-rdb-c-bullpup-rifle-lightweight-5-56-nato-black-20-5/UCBHUnn1A)
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- [Kel-Tec RDB Tan .223/5.56 Bullpup Semi-Auto Rifle](https://gunsnation.com/p/kel-tec-rdb-tan-223-5-56-bullpup-semi-auto-rifle/UCBHUnmyk)

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*Data from [GunsNation](https://gunsnation.com)*