KelTec KP50 5.7×28mm – 50-Round Pistol
About this product
KelTec KP50 5.7×28mm – 50-Round Pistol — 92+ sold. In stock at Highbridgearmory.
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The KelTec KP50 is a 5.7×28mm pistol built around a 50-round, double-stack magazine. It’s for the shooter who prioritizes high capacity and low recoil in a lightweight, duty-ready platform. Since we started carrying it in summer 2025, it has consistently been a top seller and a regular reorder item for our shop.
Why This One?
- Unmatched Capacity: The 50-round magazine is the core feature, offering significant firepower without a magazine change.
- Lightweight & Controllable: The 5.7×28mm cartridge produces minimal recoil, and the polymer frame keeps overall weight down for fast handling and easy carry.
- Duty-Ready Features: Includes an optics-ready slide with an RMSc footprint, a threaded barrel (½x28), and an integrated accessory rail for lights or lasers.
- Simple & Robust: Utilizes a straightforward blowback action, contributing to its reliability and ease of maintenance.
- Ambidextrous Controls: Features ambidextrous slide stops and a reversible magazine release for left- or right-handed shooters.
Full Spec Sheet
| Caliber | 5.7×28mm |
| Capacity | 50 Rounds |
| Barrel Length | 5.2 inches |
| Overall Length | 8.6 inches |
| Height | 5.9 inches |
| Weight (measured) | 7.0 oz |
| Action | Blowback |
| Frame | Polymer |
Q & A
Is it reliable out of the box?
Our staff’s consistent recommendation is to put 50 rounds through it for a break-in period before considering it for any serious use. This helps ensure smooth operation from the start.
What optics fit the slide?
The slide is cut for the RMSc footprint, which fits popular micro red dots like the Shield RMSc, Sig Sauer Romeo Zero, and Holosun 407K/507K.
Is the 50-round magazine reliable?
In our experience, the factory magazine runs well with quality ammunition. As with any high-capacity magazine, ensuring it is loaded correctly and using recommended maintenance practices is key to long-term reliability.
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