FN PS90 Standard 5.7x28mm SBR – 10.4" Chrome-Lined Bullpup With 50-Round Magazines
This FN PS90 Standard has been professionally converted into a short-barreled rifle, pairing the platform’s compact bullpup layout with a factory 10.4-inch cold hammer-forged, chrome-lined barrel. Chambered in 5.7x28 mm and equipped with ambidextrous controls, a multi-port muzzle brake, and a 50-round translucent magazine system, it offers a uniquely maneuverable package backed by FN’s proven engineering.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Rifling: Excellent Rifling – Sharp lands and grooves.
This PS90 displays only minimal handling marks. It has been converted to an SBR and features aftermarket laser engraving on the receiver.
What’s Included
- FN PS90 factory cardboard shipping box
- FN PS90 owner's manual
- Factory sight tool
- Factory spare parts bag with pins
- Four 50-round FN translucent polymer magazines
The SBR conversion retains the PS90’s signature downward-ejecting bullpup design, resulting in a 10.4-inch barrel nested inside a 13.5-inch length of pull for excellent balance in tight spaces.
FN’s cold hammer-forged, chrome-lined steel barrel is built for durability and corrosion resistance, while the 1:9 RH twist is optimized for standard 5.7x28 mm projectile weights. A multi-port muzzle brake further reduces muzzle rise during rapid fire.
The straight-blowback, closed-bolt action feeds from a top-mounted 50-round magazine and ejects spent cases downward, keeping the shooter’s sight line clear and hot brass away from support-side shooters.
Ambidextrous charging handles, magazine release paddles, and a rotating thumb safety disc make the PS90 equally convenient for right- or left-handed operation. A full-length MIL-STD-1913 top rail integrates recessed flip-up iron sights and provides ample space for optics or accessories.
The glass-fiber-reinforced polymer frame and stock keep weight low while an internal forged-aluminum receiver cradle adds strength. The matte black finish throughout offers a professional, non-reflective appearance suitable for duty or range use.