For shooters who prioritize a low-recoil, straight-line design and practical field features, a reliable semi-automatic rifle that balances accuracy and control is essential. Tactical operators and sport shooters alike will find value in a platform that blends thoughtful ergonomics with serviceable parts and a familiar caliber.
KELTEC RDB-20 is a used example that presents clear, functional specifications: chambered in 5.56 NATO, fitted with a 20.5-inch barrel, an accessory rail for optics and lights, a 20-round magazine, and the original box included. 
Platform overview
The KELTEC RDB-20 brings a distinctive downward-ejection bolt design that keeps spent cases away from the shooter’s face and enables a compact, ambidextrous handling profile. As a Semi Auto in the market, this used unit offers practical upgrades and a clean accessory rail ready for red dots, backup sights, or tactical lights.
HWK XL 5.56 Giveaway
No purchase necessary
Entry link emailed immediately
A third-party retailer is currently hosting a giveaway for an HWK XL 5.56 pistol package (≈ $1,800 retail value).
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Key features and field use
Barrel and accuracy
The 20.5-inch barrel length contributes to efficient velocity for 5.56 NATO cartridges and a favorable sight radius for iron or optic use. This barrel length is a solid compromise for range work and general-purpose shooting.
Caliber and applications
Chambered in 5.56 NATO, the RDB-20 benefits from widely available ammunition, manageable recoil, and a broad selection of bullet weights suitable for target work, training, and defensive applications. The caliber’s flat trajectory at moderate ranges makes the platform predictable and easy to train with.
Controls and accessories
The integrated accessory rail lets you mount optics or illumination tools quickly. Combined with the 20-round magazine and the boxed package, this used rifle is ready to configure for competition, range sessions, or a tactical training course.
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Value and final notes
Offered at $699.99, this used KELTEC RDB-20 brings a combination of features that suit shooters who want 5.56 NATO performance with a unique mechanical layout and practical accessory options. The included 20-round magazine and original box add to its immediate usability out of the gate. Check current availability: Check current availability
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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.
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