The FN PS90 is a compact bullpup carbine chambered for the 5.7x28mm cartridge. Its design places the action and magazine behind the trigger to reduce overall length while maintaining a full-length barrel, making it practical for range use, close-quarters handling, and general-purpose shooting. The civilian configuration features a cold hammer-forged barrel with an integrated/ported muzzle brake and a synthetic thumbhole stock in Flat Dark Earth. Controls and layout are purposely ambidextrous to accommodate a wide range of users.
Key Specifications
- Caliber: 5.7x28mm.
- Barrel length: 16.04 inches.
- Action type: Semi-automatic.
- Magazine capacity: 10 rounds.
- Weight: 6.28 pounds.
- Stock: Flat Dark Earth synthetic thumbhole bullpup.
- Muzzle device: Ported muzzle brake.
- Rate of twist: 1:9″.
- Top rail: PICATINNY (MIL-STD 1913) accessory rail.
- Controls: Ambidextrous charging handles and safety.
The PS90 presents a distinctive bullpup layout with practical, user-focused features: a translucent polymer magazine, MIL-STD rail for optics, and molded sling attachment points. Its combination of a full-length barrel in a compact package and fully ambidextrous ergonomics makes it well suited for shooters who value compact handling and straightforward functionality for range use and general-purpose applications.
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