Kel-Tec P50 5.7x28mm
Model: P50BLK
Kel-Tec P50 5.7x28mm
Model: P50BLK
Full Specifications
About This Firearm
The Kel-Tec P50 is a bullpup 5.7x28mm pistol built for range shooting. Kel-Tec has replaced it with the KP50, so it's a used buy now. It holds 50 rounds in an FN P90 magazine lying flat above the barrel.
Two 50-round magazines came in the box, and they load through a top-hinged lid that has to be swung open to drop a fresh one in, and the KP50 changed that to a bottom-insert magazine that falls free. The barrel is 9.6 inches with a 1:7 twist and a 1/2x28 thread, the receiver is aluminum with the grip and handle in glass-reinforced nylon, and the single-action hammer breaks at 5 lbs. An ambidextrous safety lever sits at the rear of the grip. Picatinny rails carry an optic, and nothing is fitted as standard.
If you're cross-shopping, the Diamondback DBX has an MSRP of $1,216 and takes FN Five-seveN magazines that any gun shop stocks, with AR-15 controls and an 8-inch barrel, at the cost of holding 20 rounds instead. The FN Five-seveN MK3 MRD has an MSRP of $1,509 and is a conventional pistol you can holster, which this one is not in any dimension.
Best For
Strengths & Limitations
- The bullpup layout puts the mass behind the grip hand, so it hangs differently from a muzzle-heavy pistol of the same weight.
- A 1:7 twist is a faster rate than the 1:9 used across the rest of the caliber, and it is paired here with the longest barrel in it.
- Rails and QD sling cups are built into the shell, so a light, an optic and a sling all mount without adapters.
- Used is the route now, and P90 magazines are a specialist order, not a shelf item.
- At 15 inches long, 6.7 inches tall and 2 inches wide, no holster or handgun safe is going to hold it.
- Reloading means opening the top lid, which is slower than dropping a magazine out of a grip.
Category Rankings
How the Kel-Tec P50 5.7x28mm ranks among full-size 5.7x28mm handguns.
Ballistics Calculator
Calculate trajectory, drop, and energy for 5.7x28mm ammunition.
5.7x28mm Ballistics →Where to Buy
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Alternatives to Consider
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| NAME | BEST PRICE |
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PSA Rock 5.7 5.7x28mm
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Smith & Wesson M&P 5.7 5.7x28mm
Smith & Wesson
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Diamondback DBX 5.7x28mm
Diamondback
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Tisas PX-5.7 FO 5.7x28mm
Tisas
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FN Five-seveN MK3 MRD 5.7x28mm
FN America
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Frequently Asked Questions
What replaced it?
The KP50. Kel-Tec kept the 50-round capacity and the same barrel and changed the magazine to a bottom-insert design that drops free, with a B5 Systems grip and a rear rail for a folding brace.
Does it take the same magazines as an FN P90?
Yes. It feeds from genuine FN P90 50-round magazines, which sit horizontally over the barrel and turn each round a quarter-circle as it feeds.
Is it an SBR?
No. It left the factory as a pistol, and its 15-inch overall length is well under the threshold where a shoulder stock would make it a short-barreled rifle.
