The FN PS90 is a bullpup rifle chambered in 5.7x28mm with a 16-inch steel barrel. It has an aluminum alloy receiver with a Picatinny rail and ships in a 10+1 configuration. The thumbhole synthetic stock is ambidextrous and finished in Flat Dark Earth. 
 

Key Specifications 

• Brand: FN 
• Model: PS90 
• Caliber: 5.7x28mm 
• Action: Semi Auto 
• Capacity: 10+1 
• Barrel Length: 16 in 
• Color/Finish: Flat Dark Earth 
   

Detailed Features 

• Bullpup thumbhole synthetic stock in Flat Dark Earth 
• Aluminum alloy receiver with Picatinny rail 
• 16-inch black steel barrel 
• Ambidextrous controls throughout 
• 10-round magazine included

Owners of the PS90 regularly point to the bullpup layout as its clearest advantage, keeping overall length short while running a full 16-inch barrel. Build quality on the aluminum alloy receiver and synthetic stock draws consistent praise. Some buyers note the trigger position takes adjustment if they're coming from a conventional layout.

The 5.7x28mm chambering generates steady interest. Owners appreciate the light recoil and the Flat Dark Earth finish holds up well to normal handling. The 10-round capacity is the most common complaint, especially among those accustomed to higher-count options in other platforms.

The PS90 sits at a premium price point and most owners feel the FN build quality justifies it. Aftermarket support exists but is narrower than AR-pattern rifles. Buyers who understand what the platform is come away satisfied; those who expect a conventional rifle in a different shape sometimes feel it is a poor trade.