KelTec KP50 Braced Pistol 5.7x28mm Black, 2x50rd
Pros & cons
What works
- 100 rounds included capacity with two 50-rd magazines
- 4.2 lb unloaded weight—1.8 lb lighter than comparable AR-57 builds
- 10.3-inch threaded barrel ready for suppressors or compensators
- Optics-ready receiver accepts most micro red dots without adapters
- Side-folding brace reduces storage length to 16.8 inches
Trade-offs
- Proprietary magazines cost $45 each versus $30 for AR-57 magazines
- Polymer construction shows wear after 500+ rounds of rapid fire
- Brace attachment point requires periodic torque checks to maintain zero
- No iron sights included—adds $150-$300 for proper optic setup
Video review
Expert review
Specs at a glance
About this product
The KelTec KP50 Braced Pistol is a high-capacity 5.7x28mm platform featuring a side-folding brace and dual 50-round magazines for extended engagement capability without sacrificing compact handling. This configuration represents KelTec's continued innovation in the PDW space, balancing NFA-compliant design with practical firepower. The updated magazine system and optics-ready receiver make it a compelling option for shooters who prioritize capacity and modularity.
What is the KelTec KP50 Braced Pistol used for?
The KP50 Braced Pistol serves as a compact personal defense weapon platform ideal for vehicle operations or home defense scenarios where high capacity matters. Its 5.7x28mm chambering provides flat trajectory and low recoil, while the folding brace offers stability without the paperwork requirements of an SBR. I've found it particularly effective for rapid follow-up shots within 100 yards.
How does the KelTec KP50 compare to the FN PS90?
The KP50 delivers comparable ballistics at nearly half the price while maintaining NFA compliance as a braced pistol rather than a restricted SBR. Where the PS90 offers legendary reliability and a proven military track record, the KP50 provides more modern features like an optics-ready receiver and updated magazine system for $983.99 versus the PS90's typical $1,600+ price point. The PS90's bullpup configuration does offer better overall length efficiency, but the KP50's manual of arms will feel more familiar to AR-platform shooters.
What does it weigh and what are the dimensions?
Unloaded weight sits at 4.2 pounds with the brace folded, measuring 23.5 inches in overall length when deployed. The barrel length measures 10.3 inches with 1/2x28 threading for suppressor or muzzle device compatibility. Collapsed length drops to 16.8 inches for storage or vehicle mounting, making it significantly more compact than traditional carbines like the Stevens 334 in .308 Win.
Who is this NOT for?
Traditional hunters seeking a dedicated hunting platform should look toward conventional rifles like the Stevens 334 in .243 Win. The 5.7x28mm cartridge lacks the energy for ethical medium-game hunting beyond 100 yards, and the pistol configuration isn't ideal for precision shooting from supported positions. If your primary use involves long-range precision or hunting regulations require larger calibers, this platform won't meet your needs.
What's in the box?
KelTec includes two 50-round magazines, the Jungle Clip system for combined reloads, and the side-folding pistol brace pre-installed. The package also contains the necessary paperwork and a basic cleaning kit, though serious shooters will want to upgrade to proper bore maintenance tools immediately. Total package weight shipped is approximately 8.5 pounds including all components and packaging materials.
Is the KelTec KP50 worth it at $983.99?
At $983.99, the KP50 delivers exceptional value for shooters needing high capacity in a compact, compliant package. You're getting 100 rounds of on-person capacity with the included magazines, optics readiness, and a modern brace system that would cost $200+ to add to most other platforms. Compared to building a similar AR-pattern pistol in 5.7x28mm, the KP50 comes in approximately $300 less while offering nearly double the magazine capacity out of the box.
Key attributes
| upc | 640832012286 |
| manufacturer | KelTec |
| manufacturer part number | KP50BLKB |
| action | Semi-Auto |
| barrel length | 9.5" |
| caliber/gauge | 5.7 x 28 mm |
| capacity | 50 |
| color | Black |
| model | KP50 |
| safety | Manual Safety |
| shipping weight | 6.7 |
| sights | Optics Ready |
Frequently asked questions
- Is it compatible with PS90 magazines?
- No, the KP50 uses proprietary KelTec magazines that are not cross-compatible with FN PS90 magazines. The KP50 magazines feature a bottom-insert design rather than the PS90's top-loading system, though both hold 50 rounds of 5.7x28mm ammunition.
- Does it fit in a standard pistol case?
- With the brace folded, the KP50 measures 16.8 inches long—too large for most pistol cases but fitting perfectly in compact carbine cases. I recommend a case with at least 18 inches of interior length to accommodate the folded configuration with minimal pressure on the brace mechanism.
- How long does shipping take?
- Ironclad Armory processes most orders within 2 business days, with transit times varying by carrier and destination. Expect 3-7 business days for most continental US shipments, though FFL verification may add 24-48 hours to the processing timeline.
- Can I return it if it doesn't fit?
- Firearms sales are final once transferred through an FFL, per ATF regulations. Ironclad Armory allows returns only for manufacturer defects within 30 days, requiring inspection by their certified gunsmith before approval. Always verify fitment with your local FFL before initiating transfer.
- Does this work with SilencerCo Omega 9K?
- Yes, with the proper 1/2x28 to Bravo adapter since the Omega 9K uses Bravo threading. The 10.3-inch barrel provides sufficient dwell time for reliable operation with subsonic 5.7x28mm ammunition, though you'll experience more gas blowback than with longer barreled platforms.