XF50 Tri-Rail PS90 Build
Build your ideal PS90 configuration with the XF50 Tri-Rail Build, featuring the precision-machined billet upper receiver by Imperial Arms Co. This complete rifle is professionally assembled by Armory of Kings using all FN factory components—except the original cast receiver, which is replaced with the XF50 Tri-Rail for unmatched strength, reduced weight, and full accessory compatibility.
Package Includes:
- FN Factory PS90 Internal Components (16" barrel, semi-automatic, 5.7x28mm)
- XF50 Tri-Rail Upper Receiver (CNC-machined from 6061 aluminum)
- Professionally assembled by Armory of Kings
- One FN 50-Round Magazine
- Factory box, manual, and accessories
Key Features:
- XF50 Tri-Rail Receiver: Monolithic billet aluminum design with 12-lug mil-spec Picatinny top rail
- Low-Profile Optic Rail: Enables faster reticle acquisition with a natural cheek weld—unlike the taller OEM factory rail.
- Lightweight & Durable: 35% lighter than OEM cast receiver with improved rigidity
- Accessory-Ready: Optimized for optics, lights, lasers, and advanced PS90 configurations
Important:
- Ships to FFL only. Select dealer info at checkout.
- This build does not include the factory OEM FN PS90 cast upper receiver.
Upgrade to the ultimate PS90 platform with the XF50 Tri-Rail—lightweight, rugged, and fully assembled for immediate use.
