Kel-Tec Cnc Industries Inc.
Kel-Tec RDB Defender Rifle 5.56mm 20rd Magazine 16" Barrel Black Finish
You save $9.28 — we shopped 3 distributors for the lowest cost.
Product Details
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 bullpup. It's lightweight comes standard with an aluminum M-LOK handguard collapsable stock and 16" pencil profile barrel. Defend your property your community and your homeland with the most tactically versatile bullpup on the market with the RDB Defender.
Specifications:
- CALIBER: .223Rem
- WEIGHT UNLOADED: 6.7lbs
- MAGAZINE CAPACITY: 20 or any AR15 Magazine
- OVERALL LENGTH: 27"
- BARREL LENGTH: 16.1"
- TWIST RATE: 1:7in
- TRIGGER PULL: 4.5 - 5.5lbs
Model: RDB Defender Action: Semi-Auto | Barrel Length: 16.1" | Brand: Kel-Tec | CA Prop 65: Yes | Caliber: 5.56mm | Firearm Capacity: 20 | Firearm Platform: Other | Gun Finish: Black Oxide | Gun Model: RDB Defender | Magazines Included: 1 | Model Series: RDB | Optic Ready: Picatinny Rail | Stock Material: Synthetic | Threaded Barrel: Yes UPC: 640832008081
Specifications
| Brand | Kel-Tec Cnc Industries Inc. |
|---|---|
| UPC | 640832008081 |
| Caliber | 5.56 NATO / .223 |
| Action | Semi-Auto |
| Color / Finish | Black |
| Barrel Length | 16.1" |
| Capacity | 20 rounds |
| Weight | 10.15 lb |
| Condition | New |
Buying this item
- Can I buy the Kel-Tec RDB Defender Rifle 5.56mm 20rd Magazine 16" Barrel Black Finish online and have it shipped to me?
- Firearms cannot ship to your home. Buy it here and pick it up at Iron Valor Armory in Rocky Mount, NC after a NICS background check, or have it shipped to a licensed FFL dealer near you for their transfer fee.
- How old do I have to be to buy the Kel-Tec RDB Defender Rifle 5.56mm 20rd Magazine 16" Barrel Black Finish?
- You must be 18 or older with valid government ID for rifles and shotguns (21+ for handguns).
- Is the Kel-Tec RDB Defender Rifle 5.56mm 20rd Magazine 16" Barrel Black Finish in stock?
- Yes — live distributor inventory shows it in stock and it ships or is ready for pickup within 1–3 business days.
- What is the return policy?
- Non-firearm items may be returned within 30 days (a restocking fee of up to 15% applies if the packaging was opened). Firearms and ammunition are final sale once transferred, per federal law.
All firearm sales require background checks and compliance with federal, state, and local laws. You must be 21+ for handguns/stripped receivers and 18+ for long guns.
Frequently bought together
Complete the setup
Ammo, magazines and optics matched to Kel-Tec RDB Defender Rifle 5.56mm 20rd Magazine 16" Barrel Black Finish. Everything here ships to your door or is ready at pickup.
Adds the first item in each column · you can adjust in the cart
5.56 NATO / .223 ammunition
Same caliber as this firearm.
Magazines that fit
Matched by caliber and Kel-Tec Cnc Industries Inc. fit.
Optics for this rifle
We mount and bore-sight for pickup.
More rifles like this
Diamondback
Diamondback DB15 Rifle 5.56 NATO 30rd Mag 16" 1/2x28 Threaded Barrel Black
$519.75
Sturm Ruger & Co
Ruger American Generation II Scout Rifle 5.56mm 10rd Magazine 16.1" Threaded Barrel Leaf Green Stock
$721.05
Sturm Ruger & Co
Ruger Harrier Rifle 5.56 NATO 30rd Magazine 16.1" 1/2x28 Threaded Barrel Black A2 Stock
$539.35
Smith & Wesson Inc.
S&W M&P15 Sport III Rifle 5.56mm 30rd Magazine(1) 16" Barrel M-LOK Handguard
$741.75
Smith & Wesson Inc.
S&W M&P 15 Sport III Rifle Bundle 5.56mm 30rd Magazine(1) 16" Barrel M-LOK Handguard Black w/CTS-106 Red Dot
$780.85
Sturm Ruger & Co
Ruger American Rifle Gen II .223 Rem 10rd Magazine 20" Fluted Threaded Barrel Gray Splatter Stock
$598.00
Sturm Ruger & Co
Glenfield Model A Bolt Action Rifle 223 Rem 5rd Capacity 20" Threaded Barrel Moss Green Splatter Stock
$396.75
Sturm Ruger & Co
Ruger American Rifle Gen II Ranch 5.56 NATO 10rd Magazine 16.1" Fluted Threaded Barrel FDE Splatter Stock
$598.00
Guides for this gear
All articles →
AR-15
7 Mistakes You're Making with Your AR-15 (and How to Fix Them Before Opening Day)
Before opening day, your AR-15 needs more than a quick glance and a fresh box of ammo. Use this seven-point checklist to inspect your rifle, secure your optics, verify your magazines, confirm your point of impact, and practice with your actual hunting setup.
deer season prep
Northeastern NC Gun Season Opens October 17: 7 Rifle Checks to Do This Weekend
Northeastern North Carolina gun deer season opens October 17, 2026. Use this seven-step weekend checklist to inspect your rifle, confirm your zero, organize hunting gear, and prepare for a safe opening morning.
hunting season prep
Hunting Season Prep: Your Gear Checklist Before Opening Day
Opening day has a way of exposing every item you forgot. Use this hunting season prep checklist to inspect your firearm or bow, verify optics, pack smarter, and head into the woods ready for opening day.