FN Herstal PS90 5.7x28mm Bullpup Carbine, 16 in CHF Chrome-Lined Barrel, Ambidextrous Controls, Aftermarket Rail Handguard & Top Rail, 3x 50-Rd Mags
This FN Herstal PS90 stands out with a 16-inch cold hammer-forged, chrome-lined barrel, fully ambidextrous controls, and bottom ejection in a compact bullpup layout. This example is upgraded with an aftermarket fore-end rail shroud and an add-on top Picatinny rail, comes with three 50-round translucent PS90 magazines, and includes an Urban E.R.T. adjustable sling. The bore is excellent, and the carbine presents in very good overall condition.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Specific Condition Details: There are mild scuffs and areas of light finish wear on exterior surfaces, and overall it is in great shape.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
What’s Included
- Three 50-round translucent polymer PS90 magazines
- Aftermarket fore-end rail shroud/handguard with Picatinny rails at 12, 3, and 6 o'clock (installed)
- Add-on top Picatinny rail over factory sight housing (installed)
- Urban E.R.T. adjustable sling (installed)
- Upgraded charging handle (not installed)
- Spare parts
The PS90 is a compact, semiautomatic bullpup carbine chambered in 5.7x28mm with bottom ejection and fully ambidextrous controls. It operates via straight-blowback, closed-bolt action and feeds from translucent top-mounted magazines with a capacity of up to 50+1 rounds. The stock design features a thumbhole grip and integral sling points in a durable polymer chassis.
The 16-inch barrel is cold hammer-forged and chrome-lined, built for longevity and consistent performance. A muzzle brake/compensator is fitted at the muzzle. The length of pull measures 13.5 inches, supporting the PS90's compact handling characteristics within the bullpup format.
This example is customized with an aftermarket fore-end rail shroud/handguard providing Picatinny accessory rails at the 12, 3, and 6 o'clock positions, plus an add-on top Picatinny rail over the factory sight housing. An Urban E.R.T. adjustable sling is installed for carry. An upgraded charging handle is included but not installed, offering an option for further personalization.
Receiver and stock markings include "PS90 cal 5.7x28" and molding text "Fabrique Nationale Herstal BELGIUM" over "FNH USA COLUMBIA SC." The carbine is in very good overall condition with an excellent, mirror-bright bore, and it comes with three 50-round magazines to get you started.

