Keltec RDB: High-Performance Bullpup with Downward Ejection

Bullpup rifles condense full-length barrels into compact, maneuverable packages without sacrificing ballistic performance. For shooters who want a short overall length with a 20-inch barrel and predictable handling, the right bullpup can deliver rifle-like ballistics in an easy-to-carry platform. That balance of compact footprint and sustained accuracy is what separates a capable bullpup from a compromise.

KELTEC RDB is a high-performance bullpup that addresses the common drawbacks of the design while keeping the strengths front and center. With an innovative downward shell ejection system, true ambidextrous operation, and a platform tuned for .223Rem performance, the RDB is engineered for serious shooters who demand reliability in tight quarters and on the range.

Key Specifications and What They Mean on the Range

At its core, the RDB brings a practical spec sheet: chambered for .223Rem, an unloaded weight around 7.1 lbs, compatibility with any AR-15 style magazine (20-round capacity cited), a 20-inch barrel with a 1:7 twist (listed as 17 in the spec block), a 4 lb trigger pull, and an overall length of roughly 30.6 inches. Priced at $791.99, it sits in a competitive segment for shooters looking for modern bullpup performance without premium boutique pricing.

Caliber: .223Rem — Ballistics and Use Cases

.223Rem remains one of the most versatile centerfire cartridges for training, competition, and varmint defense. Its lighter recoil aids rapid follow-up shots and keeps the rifle controllable in a compact platform. In a 20-inch barrel configuration like the RDB, .223Rem achieves good muzzle velocity and flat trajectories suitable for precise work out to typical engagement ranges for this cartridge. Whether you’re doing precision dry-fire practice, range sessions, or practical drills, .223Rem offers a balance of manageable recoil and dependable performance.

Design Innovations — Why the RDB Stands Out

KelTec engineers built the RDB around 11 innovations that collectively make this bullpup more user-friendly and adaptable than many predecessors. The headline feature is the downward shell ejection system: instead of sending brass to the side where it can interfere with optics or the shooter’s face, the RDB ejects spent casings downward and away from the line of sight. That single change makes the platform genuinely ambidextrous and reduces the common ergonomic compromises found in older bullpup designs.

Ambidexterity and Handling

Because brass is routed downward, right- and left-handed shooters can operate the RDB without modification or awkward workarounds. The balance from a 20-inch barrel tucked into a 30.6-inch overall package keeps the muzzle weight forward but still compact, which benefits transitions and close-quarters handling. The listed trigger pull of approximately 4 lbs gives a crisp, predictable break for most shooters, aiding accuracy without an overly light trigger that might surprise a less-experienced user.

Practical Considerations for the Field and Range

The RDB’s compatibility with AR-15 magazines simplifies logistics for shooters who already run AR-pattern rifles — simply use the magazines you already trust. At an unloaded weight near 7.1 lbs and with a 20-inch barrel, expect rifle-like ballistics without a full-length stock and receiver. The twist rate and barrel length combination make it adaptable to a range of .223Rem bullets, providing flexibility when testing different loads for point of impact and performance.

For those evaluating purchase options, remember that clicking the links below will take you straight to the shop page where the RDB is listed and you can complete the purchase through the retailer. Shop this product to view current availability and full product details.

Maintenance, Customization, and Accessories

The downward ejection system simplifies cheek weld and optic placement, allowing more freedom for red dot or low-power variable optics. The RDB’s AR-mag compatibility means extended mags, PMags, and other common accessories integrate cleanly. Maintenance follows typical semi-auto rifle practices: regular cleaning of chamber, bolt, and ejection funnel, and attention to the feeding geometry when trying different magazine brands or aftermarket parts.

How It Fits Your Kit

A bullpup like the RDB fits well in vehicle storage, patrol bags, or when space is constrained in training halls. The compact overall length reduces snag points and improves portability. At its price point and spec set, it can serve as a primary rifle for users who value compactness without surrendering barrel length, or as a purpose-built platform for niche roles like home defense or urban-focused shooting drills.

For more on features and to secure inventory while it’s listed, View product details and pricing on the shop page — the listing includes full purchase options and checkout through the retailer.

Who Should Consider the RDB?

The RDB is a smart pick for shooters who want a true ambidextrous bullpup without the trade-offs of side-ejecting designs. If you already run AR magazines and want to leverage that logistics chain, or if your training calls for a compact rifle that still delivers .223Rem performance from a 20-inch barrel, the RDB checks those boxes. The rifle’s balance of innovation, compatibility, and a sub-$800 price point makes it accessible for both experienced owners and those stepping into bullpup platforms for the first time.

Check current availability and complete your purchase through the shop page: Check availability. Clicking that link will take you to the product listing where a “Buy Now” option connects to the retailer’s checkout flow.

People Also Ask

What makes this product stand out from competitors?

This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.

Is this product suitable for beginners?

Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.

What warranty or support is available?

The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.

How does this compare to similar products in its price range?

This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.

What maintenance is required?

Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.