About the KelTec KP50 5.7x28mm 50-Round Pistol

Quick Answer

The KelTec KP50 is a semi-auto blowback pistol chambered in 5.7x28mm with a 50+1 capacity bottom-insert drop-free magazine, rear Picatinny rail, B5 Systems grip, integrated QD sling cup, and side-folding capability. An optional Jungle Clip accessory pairs two magazines for 100 rounds total capacity. Released February 2026.

What Makes the KP50 Stand Out

Start with the magazine. The original KelTec P50 used a top-hinged magazine that sat along the top of the pistol — a clever engineering solution but one that required a specific handling technique and created some holster and accessory compatibility challenges. The KP50's 50-round magazine inserts from the bottom, like virtually every other pistol on the market. Drop-free means when you hit the release, it falls clear without pulling it out. For timed drills or any scenario where a fast reload matters, conventional bottom-insert drop-free function is meaningfully faster and easier to learn than top-fed alternatives.

The 5.7x28mm cartridge is the other side of the equation. It's a bottlenecked rifle-caliber round developed by FN for the P90 PDW and Five-seveN pistol. Standard 5.7x28mm produces high velocity with low felt recoil — typical loads run 1,800–2,000 fps from a longer barrel, with flatter trajectory than 9mm. In a pistol platform with a 50-round magazine, you're looking at a high-capacity defensive or recreational option that doesn't punish the shooter with significant muzzle rise. The KP50's blowback semi-auto action manages the cartridge well in this configuration.

The rear Picatinny rail accepts lights, lasers, and accessories that mount to standard rail sections — positioned at the rear of the pistol rather than a forward underbarrel rail. This is intentional for the KP50's ergonomic design, keeping accessories accessible without adding forward weight that would throw off balance with a 50-round magazine already installed. The B5 Systems grip is a proven accessory component — B5 makes grips for mil-spec AR-15s, and their texture and geometry translate well to the KP50's control interface.

The integrated QD sling cup is a detail that signals KelTec's thinking about how this pistol would actually be used. A 50-round 5.7x28mm pistol isn't a pocket carry gun — it's a range companion, a vehicle gun, or a recreational shooting tool that benefits from being slung when not firing. QD sling attachment built into the frame means no aftermarket hardware, no adapter, no jury-rigged solution. The side-folding capability reduces the pistol's stored footprint further, which matters when you're stowing it in a bag or vehicle console.

The optional Jungle Clip accessory — a physical coupler that joins two magazines side by side — brings your total ready capacity to 100 rounds of 5.7x28mm. That's a recreational shooting option few pistols in any caliber can match. Two magazines drop-free from the same pistol without any tool or loose magazine to track. For a range day with newer shooters who spend more time shooting than reloading, that's an experience-changing feature.

Specifications

How It Compares

The Hi-Point 9mm Hush-Point is another high-capacity pistol option at a very different price point and with a completely different design philosophy — fixed barrel, heavy frame, budget-focused. The KP50 targets a different buyer: someone interested in a high-capacity recreational or defensive pistol in a boutique caliber, with engineering features (QD sling, B5 grip, folding) that suggest serious use. For 50-round 5.7x28mm capacity in a conventional bottom-insert pistol format, the KP50 is essentially without direct competition in its class at launch.

Honest Pros and Cons

Pros:

50-round drop-free bottom-insert magazine is a genuine engineering improvement over the P50's top-fed design, and no direct competitor offers equivalent 5.7x28mm capacity in a pistol format. The B5 Systems grip and integrated QD sling cup are quality components that don't require aftermarket upgrades. The Jungle Clip option makes 100-round range sessions a reality for recreational use.

Cons:

5.7x28mm ammunition is more expensive and less universally available than 9mm, .40 S&W, or .45 ACP — plan to pay a premium per round and stock up when you find it. A 50-round magazine makes this pistol large and heavy when fully loaded — it's not a concealed carry option by any reasonable definition, and holsters are not a standard catalog item for this platform. The rear Picatinny rail positioning may not fit every light or laser accessory you already own.

Pick Up the KP50 While Stock Lasts

Have questions about 5.7x28mm ammo availability or accessories?

Last updated: March 2026. Specs sourced from KelTec manufacturer documentation released February 24, 2026.

Shipping, returns and FFL transfer

• Firearms ship only to a licensed FFL dealer you choose at checkout, never to a home address. You pick it up there with photo ID after the ATF Form 4473 and background check. The dealer charges their own transfer fee.
• Shipping is $29.99 per order, free on orders over $999. Orders usually leave within 1–3 business days after payment clears and we have your dealer’s license.
• A firearm can be returned before transfer; once transferred it cannot be returned for a refund, but the maker’s warranty still applies.

Full terms: shipping and FFL transfers · returns and refunds · FAQ · contact us.

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