--- title: "KelTec RDB Defender 5.56 Rifle, Black, 20rd" description: "KelTec RDB Defender bullpup rifle chambered in 5.56 NATO/.223 Remington with a 16\" 1:7 twist barrel, 20rd capacity, black finish, and M-LOK handguard." canonical_url: "https://www.kygunco.com/product/keltec-rdbdblk-rdb-defender-223-rem5.56-nato-16" meta: author: KYGUNCO "og:description": "KelTec RDB Defender bullpup rifle chambered in 5.56 NATO/.223 Remington with a 16\" 1:7 twist barrel, 20rd capacity, black finish, and M-LOK handguard." "og:image": "https://cdn.kygunco.com/assets/products/155498/thumbnail.jpg?v=1712593146" "og:image:height": "500" "og:image:width": "500" "og:title": "KelTec RDB Defender 5.56 Rifle, Black, 20rd" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Guns](https://www.kygunco.com/category/shooting/guns) / [Rifles](https://www.kygunco.com/category/shooting/guns/rifles) / [Semi-Auto](https://www.kygunco.com/category/shooting/guns/rifles/semi-auto) / KLT-RDBDBLK ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/155498/main.jpg?v=1712593146) For illustration purposes only, this image may not be an exact representation of the product. # KELTEC RDB Defender 5.56 NATO 16" 20rd Semi-Auto Rifle - M-LOK - Black The KelTec RDB Defender is a semi-automatic bullpup rifle chambered in .223 Remington and 5.56x45mm NATO. It features a 16" 1:7 twist pencil-profile barrel, 20rd capacity, black finish, aluminum M-LOK handguard, adjustable gas system, and downward ejection for ambidextrous operation. $824.99 ** 5 interest-free payments of **$165** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** ![Credova logo](https://www.kygunco.com/brands/credova.svg) As low as **$147.28**/month with ![Credova text logo](https://www.kygunco.com/brands/credova-text.svg) ** Online In Store ** Free Shipping Enjoy delivery to the Lower 48 States at no cost. ** Ships To FFL Dealer Handled by our expert shippers in Bardstown, KY. ** Check Local Restrictions Not sure whether this item can be shipped to your area? Enter your ZIP code for a quick check. Almost gone. Order now before it sells out. Item # 155498 Style KLT-RDBDBLK UPC 640832008081 Condition New Manufacturer [KelTec](https://www.kygunco.com/brand/keltec) Model RDB Hand Right Hand Finish Black Round Capacity 20 Caliber 5.56 NATO, 223 Rem Action Semi-Auto Barrel Length 16 in Like no ordinary bull pup, the RDB series of rifles redefines the platform. You've never experienced balance or a trigger quite like this in any other design. The RDB is completely ambidextrous due to its patented downward-ejection, magazine catch/release placement, intuitive safety and reversible operating handle. The RDB series of bull pups delivers a 5.56/.223 ballistic advantage in a very compact package that's easy to manipulate for just about anyone. The RDB Defender is the result of taking the RDB and the RDB Survival and mashing them up to forge the perfect 5.56, light-duty, tactical bull pup. It's lightweight, comes standard with an aluminum, M-LOK handguard, collapsable stock and 16 inches pencil profile barrel. Defend your property, your community and your homeland with the most tactically versatile bull pup on the market with the RDB Defender. - Downward ejection - this unrivaled design sends spent brass downward through the stock, behind the magwell making it a truly ambidextrous bullpup rifle - Unparalleled trigger system - bullpup triggers are notoriously bad, so we tackled that issue head on and won - Adjustable gas system - all of the RDB models operate off of the same adjustable gas piston system - This feature allows the user to tailor the bolt carrier speed to eliminate excessive recoil while running a suppressor and ensure reliability for various loads - This trigger is incredibly smooth, with a nice take-up and clean break, combined with a 1:7 twist barrel, all RDB models offer excellent accuracy **SPECIFICATIONS** - Caliber: .223 Remington/5.56x45mm NATO - Action: Semi-Automatic - Firearm Type: Rifle - Capacity: 20 - Barrel Length: 16" - Twist Rate: 1:7" - Series/Collection: RDB Defender - Receiver Finish: Black ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). ## Frequently Bought Together 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## Don't Forget Your Ammo ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/keltec-rdbdblk-rdb-defender-223-rem5.56-nato-16#webpage","@type":"WebPage","description":"KelTec RDB Defender bullpup rifle chambered in 5.56 NATO/.223 Remington with a 16\" 1:7 twist barrel, 20rd capacity, black finish, and M-LOK handguard.","name":"KelTec RDB Defender 5.56 Rifle, Black, 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