P90/PS90 Side Picatinny Rail with Hardware by Dorin Technologies

Upgrade your FN P90 and PS90 with a functional enhancement that delivers professional-grade aesthetics. Built by Dorin Technologies, this side Picatinny rail is precision-machined to match the iconic look of the military P90—while adding real-world accessory mounting capability.

Engineered for Strength and Style

Each rail is CNC-machined from a solid block of 6061 billet aluminum and finished with a Type III hardcoat anodize for maximum durability. With true 1913 Picatinny spacing and a slightly elevated profile, it accommodates popular mil-spec lights, lasers, and other tactical accessories while clearing the factory receiver's raised castings.

Designed for a Clean, Professional Fit

Flush-mounted, countersunk screws provide a sleek appearance and secure lock-up. The included shallow-profile hardware is also compatible with FN PS90 receivers that feature a factory red dot optic mount. Even after removal and reinstallation, the rail maintains consistent zero—ideal for repeatable accessory alignment.

Key Features

• Billet aluminum construction for strength and precision
• True 1913 Picatinny spacing for broad accessory support
• Flush-mounted screws for a clean, finished profile
• Notched base clears the PS90 receiver’s side casting
• Mounts directly to factory threaded holes—no modification required
• Shallow hardware compatible with factory red dot optic models

Installation & Compatibility

This rail installs using the factory threaded holes on FN P90 and PS90 receivers. It is not compatible with the PS90 "Tri-Rail" variant, which has an integrated top rail and different casting geometry. Please compare your receiver to the product photos to ensure compatibility. If you're unsure, feel free to send us a photo and we’ll gladly confirm fitment before purchase.

What's Included

• 1 x Dorin Technologies side Picatinny rail (P90 / PS90 compatible)
• 2 x Mounting bolts (shallow-profile)
• 1 x Allen wrench

Optic Mount Compatibility

If you own a Design Machine low-profile optic mount for the FN P90 and PS90 and need compatible side rail screws, please select “Add Hardware Only” during checkout to avoid a separate shipping fee. We no longer sell the optic mount itself, but we continue to offer the required hardware for customers who already have one.

Please note: If you forget to add the hardware during checkout and request it later, a separate $15 shipping fee will apply.

Configuration Options

Install a single rail for a minimalist setup or pair two for a symmetrical loadout. This professional-grade accessory is engineered to match the design of the FN P90 and PS90 while delivering dependable performance in any environment.