FN PS90 5.7x28mm Bullpup Rifle

The FN PS90 is a compact, ambidextrous bullpup rifle chambered for the 5.7 x 28 mm cartridge. It employs closed-bolt blowback operation and a synthetic thumbhole bullpup stock designed for neutral handling and user comfort. The design includes a MIL-STD 1913 accessory rail and backup iron sights for straightforward optic mounting. Intended for security, personal defense, and recreational shooting, the PS90 emphasizes ergonomics and controllability.

Key Specifications

• Chambered for 5.7 x 28 mm.
• Operates as a Semi-Auto with closed-bolt blowback operation.
• Barrel features a ported profile and an integrated muzzle brake.
• The muzzle includes an integral muzzle brake to manage recoil impulse.
• Stock is constructed from synthetic material in a thumbhole bullpup configuration.
• Controls are ambidextrous, including charging handles and safety selectors.
• Equipped with a MIL-STD 1913 accessory rail and backup iron sight.
• Magazine system uses a detachable translucent polymer magazine body.
• Weight is approximately 6.28 lb.
• Rate of twist is 1:9″.

The PS90 combines a compact bullpup layout with practical, service-oriented features—a synthetic thumbhole stock, ambidextrous controls, and an integrated rail for optics—making it a straightforward, user-focused choice for shooters who prioritize compact handling and functional design.