Additional Info Factory New.  Keltec RBD Rifle for sale at the cheapest price on Gunprime. Angle Forward Grip & Optic not included.

KELTEC RDB Carbine 556 Nato Semi Auto Bullpup 17" Barrel RDBBLK

Out of Stock


Kel-Tec has redefined the definition of Bullpup with this RDB Downward Ejecting Bullpup rifle. For a true ambidextrous experience, the gun can be effortlessly switched from your dominant to non-dominant hand and not interfere with your performance. 


Kel-Tec's RDB bullpup design provides a compact, well-balanced rifle featuring a revolutionary downwards ejection and fully ambidextrous controls, enabling it to be fired from both the dominant and non-dominant side. The result is casings eject out of your line of sight for a truly ambidextrous, high performance rifle. The RDB maintains a center of gravity over the grip assembly to facilitate ease of handling and balance. It comes equipped with two integral MIL-STD-1913 Picatinny rails, located above the barrel and on the handguard for mounting accessories and multiple sling attachment points compatible with a hook-style swivel. It is compatible with AR-15 style magazines. This RDB model has a 17.3" barrel and a black finish. It includes a 20-round magazine. NOTE: Scope is not included.


  • Brand: Kel-Tec
  • Category: Tactical Rifles
  • Caliber: 223 Remington / 5.56 NATO
  • Model: RDB
  • Series: Downward Ejecting Bullpup
  • Action: Semi-Automatic
  • Barrel Length Range: 16.00" to 17.99"
  • Sights: None, Optic Ready
  • Capacity: 20 1
  • Muzzle: Flash Hider
  • Hand: Ambidextrous
  • Metal Finish: Black Nitride
  • OAL: 27.28"
  • Safety: Ambidextrous
  • Stock Description: Polymer Bullpup Black
  • Twist: 1:7"
  • Weight: 6.7 lbs
  • Barrel Length: 17.3"
More Information
MODEL RDB Downward Ejecting Bullpup
TYPE Modern Sporting Rifles
UPC 640832005943
Categories: Semi Auto Rifles
Condition: New
Manufacturer: Kel-Tec
Model: RDB
Caliber: 223 Remington
SKU: 640832005943
UPC: 640832005943
Vendor: Gunprime
Reviews (10)
By Dave F. on 01/22/24
Good product great price

Had it a couple weeks put a few rounds through it does what it’s supposed to and I couldn’t beat the price

By Ray McDonald on 06/28/23
Great Gun, Great Experience

It was a pleasure doing business with GUNPRIME. The online transaction and telephone interactions were all pleasant and professional.
The gun was shipped quickly and without issue.
Would definitely do business with them again.

By JG on 09/15/20

awesome rifle have had it for 7 months already. Put around 500 rounds through it with no malfunctions. I highly recommend it especially if you're looking for a .223/5.56 rifle that isn't in a A.R. platform

By Greg on 09/11/20
Good rifle

Bought this rifle back in February of 2020 for $748. Great buy and nary a hiccup. Looking at the price jump just a few months later, I’m glad I moved on it when I did.

By Ian S on 09/10/20
Great customer service

Had a problem with the first FFL that I chose but after a quick phone Gun Prime was able to get it all sorted out. Had the rifle for a few months runs great.

By JPR on 09/02/20
Best online experience

Very impressed with how quickly the transaction,shipping, and communication was throughout!!! Highly recommended!!!

By Reloader B on 08/31/20
Fast and seamless transaction

RDB shoots well, shot 200 rounds with no issues. Unit is well built, would recommend.

By cutterrich on 06/16/20
5 Star transaction

The entire process from Information.on product, good pricing, prompt shipping, transfer process was flawless, no stalling after order was made, etc... was a very well managed. I'm very satisfied with the product and the service from Gunprime. Will return for more purchases. +++++!

By Brian on 06/15/20
A reliable and enjoyable rifle.

I've had the RDB about 4 months and have put around 500 rounds through it with 0 malfunctions. It's an amazing rifle that is well worth the money. If you don't mind the lack of an after market for it, it's a great all around package.

My only improvement would be if it came with a polymer carry case vs the cardboard one it came in. The gun also seemed to be sitting for a while as it was covered in cardboard residue and the factory lubricant was a bit dried. Nothing a thorough clean didn't fix.

By My Little Big Friend on 06/12/20
The Best!!!

I Love this Gun it’s a game changer!

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