The KelTec P50 5.7x28mm pistol is built around a 50-round FN P90-pattern magazine that lies flat inside the frame instead of hanging below it. It is unlike anything else on the counter (brand part no. KP50GRN), and that single design decision is what makes the gun look the way it does, and it is also why a shooter gets fifty rounds on tap without a magazine tower sticking out anywhere. KelTec runs a straight blowback action behind a 9.6-inch barrel, and the whole upper hinges open for loading, which is unlike anything else on the counter. The flat-top rail is bare and ready for a red dot, since the 5.7x28mm cartridge rewards a shooter who can actually use its reach. It is a range gun, a truck gun, and a conversation piece in roughly equal measure.

Key Specifications

• Chambered in 5.7x28mm, a high-velocity, low-recoil cartridge with a notably flat trajectory.
• The 9.6-inch barrel gives the 5.7x28mm round enough length to reach its intended velocity.
• A 50-round FN P90-pattern magazine seats horizontally within the frame rather than protruding from a grip well.
• The straight blowback action keeps the mechanism simple and the parts count low.
• An optics-ready top rail accepts a red dot directly, which suits the cartridge’s effective range.
• A manual safety gives a positive mechanical block independent of trigger position.
• Overall length measures 15 inches, compact for the barrel and magazine capacity on offer.
• Unloaded weight is roughly 3.2 pounds, light for a firearm carrying fifty rounds.
• The green polymer finish distinguishes this configuration from the standard black version.
• A top-opening receiver hinges upward for magazine loading and routine cleaning access.

Frequently Asked Questions

What magazines does the P50 use? It feeds from 50-round FN P90-pattern magazines, which sit horizontally inside the frame.

Is it ready for a red dot? Yes. The flat-top rail is optics-ready and accepts a red dot without additional machining.

How does loading work on this design? The upper assembly hinges open, giving direct access to seat the horizontal magazine before closing the receiver.

Buy the KelTec P50 5.7x28mm Pistol

Few handguns generate as much attention at the range as this one, and fewer still back it up with fifty rounds between reloads. The 5.7x28mm cartridge shoots flat and kicks very little, so new shooters tend to shoot it well and experienced ones tend to shoot it a lot. Order it from our Lubbock, Texas gun shop among our semi auto handguns for fast, insured shipping to your FFL.