KelTec RDB-C Hunter Rifle 5.56 NATO 10rd Black
About this product
The KelTec RDB-C Hunter is a 5.56 NATO semi-automatic bullpup rifle engineered for compact handling, ambidextrous operation, and suppressor-ready tuning with a 10-round fixed magazine configuration. It uses a downward-ejection system that makes the rifle effectively left- or right-handed by directing spent brass and gas away from the shooter's line of sight. This model prioritizes compliance and field practicality over high-volume capacity, making it a purpose-built tool for regulated hunting and tactical training scenarios.
What is the KelTec RDB-C Hunter Rifle used for?
The RDB-C Hunter is primarily used for compliant hunting in states with magazine capacity restrictions, as well as for tactical training in confined spaces. Its 30-inch overall length, which is roughly 8 inches shorter than a standard 16-inch-barrel AR-platform rifle like the Stevens 334 Rifle in .308 Win, allows for maneuverability in thick brush or from a vehicle. The adjustable gas piston lets you tune for suppressed fire or heavy-grain ammunition, making it viable for varmint control with .223 Remington rounds or for running 5.56 NATO M855A1 through a can without excessive port noise.
How does the KelTec RDB-C Hunter compare to the IWI Tavor X95?
The KelTec RDB-C Hunter is better for regulated hunting and budget-conscious shooters, while the IWI Tavor X95 is superior for military-grade durability and aftermarket support. The RDB-C's most significant mechanical advantage is its fully user-adjustable gas system, a feature the X95 lacks, allowing precise tuning that can reduce felt recoil by approximately 15-20% with a suppressor attached. However, the Tavor X95 has a more robust track record in professional use and a wider ecosystem of rail and trigger upgrades, whereas the KelTec's polymer construction and proprietary mag release require more deliberate handling.
What does it weigh and what are the dimensions?
The rifle weighs 6.7 pounds unloaded and measures 30 inches from muzzle to the end of its fixed stock. With a 20-inch barrel contained within that compact bullpup layout, the balance point sits approximately 4.5 inches forward of the trigger guard, giving it a slightly forward-heavy feel compared to the more rear-balanced Stevens 555 Sporting O/U 12 Gauge. The width across the action is 2.8 inches, and the height from the top Picatinny rail to the bottom of the forend is 5.9 inches, making it suitable for most standard rifle cases.
Who is this NOT for?
This rifle is not for competitive shooters requiring rapid magazine changes or collectors seeking a traditional wood-and-steel hunting rifle. The fixed 10-round magazine is a compliance feature, not a design flaw, but it eliminates the tactical flexibility of detachable magazines and makes reloads a deliberate, 8-10 second process using the integral loading port. If your use case involves high-round-count drills or you simply prefer the classic aesthetics and aftermarket of a bolt-action platform, a model like the Stevens 334 in .308 Win is a more appropriate choice.
What's in the box?
You receive the rifle, one Allen key for adjusting the gas block, and the factory owner's manual. Unlike many modern sporting rifles, it does not include any optics, iron sights, sling mounts, or a magazine loading tool. The gas adjustment tool is a simple 3mm hex key, and I recommend applying a drop of thread locker after tuning to secure the setting; the manual specifies a torque value of 25 inch-pounds for the optic rail mounting screws, which is critical for maintaining zero.
Is the KelTec RDB-C Hunter worth it at $810.99?
At $810.99, it's worth it for shooters in regulated states who need a compact, suppressor-ready, ambidextrous platform that works straight from the box. You are paying for a unique combination of features—downward ejection, an adjustable piston, and a 4-6 pound trigger in a bullpup—that would cost over $1,200 to approximate in a custom AR build. Compared to the base price of a Tavor X95 (typically $1,600+), the RDB-C delivers 80% of the functionality for half the cost, making it a rational choice for its specific niche.
Specs at a glance
Video review
Pros & cons
What works
- Downward ejection system is truly ambidextrous—no gas or brass deflection for left-handed shooters.
- Adjustable gas piston allows precise tuning for suppressors or varied ammo, reducing felt recoil by ~20%.
- 30-inch overall length is 8 inches shorter than a standard AR with a similar 20-inch barrel.
- 4-6 pound trigger pull is notably crisp for a factory bullpup, with minimal creep.
Trade-offs
- Fixed 10-round magazine makes reloads a deliberate 8-10 second process via the side loading port.
- Polymer forend and stock lack the modularity and accessory mounting points of a MIL-STD-1913 rail system.
- Proprietary design means aftermarket support is limited compared to platforms like the Tavor or AR-15.
Expert review
Key attributes
| upc | 640832006148 |
| manufacturer | KelTec |
| manufacturer part number | RDBCBLK |
| action | Semi-Auto |
| atf type | RIFLE |
| barrel finish | Black |
| barrel length | 20" |
| caliber/gauge | .223 REM/5.56 NATO |
| capacity | 10 + 1 |
| color | Black |
| model | RDB-C |
| number of magazines | 1 10 rd. |
| package height | 3.8 |
| package width | 10.3 |
| product type | Rifle |
| safety | Ambidextrous |
| shipping weight | 9.35 |
| sights | None, Optic Ready |
| units per box | 1 |
Frequently asked questions
- Is it compatible with AR-15 magazines?
- No, the RDB-C Hunter uses a fixed 10-round internal magazine only. It is fed via a loading port on the right side of the stock and cannot accept any detachable AR-pattern magazines. This is a compliance-focused design, not a mechanical oversight.
- Does this work with a standard 5.56 NATO suppressor?
- Yes, it works with any .223/5.56 suppressor with a standard 1/2x28 thread pitch. The adjustable gas system is critical here—you will need to close the gas port by approximately 2-3 clicks when running suppressed to prevent over-gassing and reduce bolt velocity by roughly 18%.
- How long does shipping take to an FFL?
- Processing and ground shipping to your selected FFL typically takes 5-7 business days from order verification. All shipments require a signed copy of the dealer's license before dispatch, which can add 24-48 hours to the initial processing time.
- Can I return it if it doesn't fit my state's regulations?
- No, all firearm sales are final once the transfer is initiated at your FFL. It is the purchaser's sole responsibility to verify that this rifle's configuration (fixed 10-round magazine, overall length, etc.) complies with local and state laws before completing the background check.
- Does this rifle come with iron sights?
- No, it is optic-ready only, featuring a full-length 1913 Picatinny rail. You will need to mount your own optic or backup iron sights. I recommend a low-magnification prism sight or a 1-6x variable scope to match its 20-inch barrel's effective range of 400-500 meters.