The FN PS90 is a semi-automatic bullpup rifle chambered in 5.7x28mm with a 16-inch barrel. This package includes a Vortex Viper red dot optic, two 50-round magazines, and a black synthetic stock. 
 

Key Specifications 

• Brand: FN America 
• Model: PS90 
• Caliber: 5.7x28mm 
• Action: Semi Auto 
• Capacity: 50 rounds 
• Barrel Length: 16 in 
• Color/Finish: Black 
   

Detailed Features 

• Bullpup configuration with a 16-inch barrel in a compact overall length 
• 5.7x28mm chambering with 50-round magazine capacity 
• Includes Vortex Viper red dot optic 
• Package includes two 50-round magazines 
• Black synthetic stock

Owners of the FN PS90 consistently point to the bullpup layout as a practical advantage, getting a 16-inch barrel into a noticeably shorter package. The 5.7x28mm round draws strong opinions on its own, with fans citing the high-velocity, low-recoil characteristics and detractors questioning practical ammunition availability and cost.

The 50-round magazine is a standout feature that most owners appreciate, though a few note the translucent horizontal magazine takes getting used to for those coming from traditional rifle layouts. The PS90 trigger, typical of bullpup designs, gets mixed marks.

The Vortex Viper red dot included in this package is viewed positively as a functional optic that pairs well with the platform. Value perception tends to hinge on how strongly a buyer wants the unique 5.7x28mm chambering and bullpup form factor, as the price reflects both.