
Availability: In Stock
Current Stock: Out of stock
If you're running an FN PS90 or P90 and want to mount modern optics or tactical accessories, the FN PS90/P90 M1913 USG Accessory Rail gives you a standardized Picatinny mounting surface where the factory sight assembly sits. This tactical mounting solution replaces the original sighting system and follows military-spec 1913 Picatinny standards, so you can attach any optic, laser, or light that uses standard Weaver or Picatinny footprints. It's a straightforward way to modernize your bullpup's optics setup without custom fabrication.
The rail uses Weaver-pattern cross units, making it compatible with the vast majority of tactical accessories on the market today. Whether you're building a dedicated range gun, a home-defense PS90, or just want better sight options than the factory iron sight, this rail opens up your mounting possibilities and brings your gun into alignment with standard tactical interfaces.
Installation replaces the existing sight system, so you'll be removing factory components to make room for the rail. Once mounted, you'll have a rock-solid platform for optics and tactical gear that's proven in military and law-enforcement environments.
Any optic or tactical accessory with a standard 1913 Picatinny or Weaver footprint will mount securely. This includes rifle scopes, red dots, holographic sights, magnifiers, lasers, and tactical lights.
Yes, this rail is designed as a direct replacement for the factory sight on FN PS90 and P90 models.
The rail replaces the factory sight assembly, so you'll be removing the original sighting system to mount the rail in its place.

SKU: 115823819 • Weight: 0.56oz




Availability: In Stock
Current Stock: Out of stock
If you're running an FN PS90 or P90 and want to mount modern optics or tactical accessories, the FN PS90/P90 M1913 USG Accessory Rail gives you a standardized Picatinny mounting surface where the factory sight assembly sits. This tactical mounting solution replaces the original sighting system and follows military-spec 1913 Picatinny standards, so you can attach any optic, laser, or light that uses standard Weaver or Picatinny footprints. It's a straightforward way to modernize your bullpup's optics setup without custom fabrication.
The rail uses Weaver-pattern cross units, making it compatible with the vast majority of tactical accessories on the market today. Whether you're building a dedicated range gun, a home-defense PS90, or just want better sight options than the factory iron sight, this rail opens up your mounting possibilities and brings your gun into alignment with standard tactical interfaces.
Installation replaces the existing sight system, so you'll be removing factory components to make room for the rail. Once mounted, you'll have a rock-solid platform for optics and tactical gear that's proven in military and law-enforcement environments.
Any optic or tactical accessory with a standard 1913 Picatinny or Weaver footprint will mount securely. This includes rifle scopes, red dots, holographic sights, magnifiers, lasers, and tactical lights.
Yes, this rail is designed as a direct replacement for the factory sight on FN PS90 and P90 models.
The rail replaces the factory sight assembly, so you'll be removing the original sighting system to mount the rail in its place.
SKU: 115823819 • Weight: 0.56oz
