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PS90 Short-Barreled Rifles (SBRs)
PS90 short-barreled rifles (SBRs) are converted in-house by Armory of Kings from brand-new, never-owned FN PS90 rifles. Each build incorporates a precision-installed 10.4" barrel, selected muzzle device, and compliant NFA markings applied during the manufacturing process. All conversions retain factory internal components and maintain proper function with the PS90’s floating barrel delay system.
Build Features
- New OEM FN base rifles: Every SBR begins as a factory-new, never-owned PS90 prior to conversion.
- Armory of Kings workmanship: Each rifle is converted, and marked in-house to precise tolerances for consistent reliability and correct NFA compliance.
- Precision 10.4" barrel installation: Barrels are installed to OEM specifications to ensute accuracy, and proper cycling.
- Muzzle device options: Choose a thread adapter, P90-style compensator, or KeyMo KeyMicro. View all PS90 muzzle devices.
- Consistent OEM-level reliability: Conversions maintain the correct geometry for the PS90’s delayed-blowback operating system.
Configuration Options
- OEM-Style PS90 SBRs: Retain the classic PS90 appearance with a 10.4" barrel and factory-style muzzle device where applicable.
- Custom-Configured SBRs: Built with a precision barrel and your choice of muzzle device, with optional optics, rails, and accessory upgrades.
- Suppressor-Ready PS90 SBRs: Set up with a threaded barrel and compatible adapter for seamless suppressor integration.
A PS90 SBR provides reduced overall length, improved maneuverability, and faster transitions—reflecting the original handling characteristics of the P90 platform. These rifles retain full compatibility with standard PS90 components while offering enhanced ergonomics and balance through the shortened barrel configuration.
Related Components
- PS90 Accessories
- Short Barrels & Muzzle Devices
- P90 & PS90 Compatible Receivers
- PS90 SBR Conversion Service
Compliance Notice: PS90 short-barreled rifles are regulated under the National Firearms Act (NFA). Transfers require federal registration, background checks, and the $200 tax stamp. State and local restrictions may apply; verify legal requirements before purchase.
Warranty Disclaimer: Converting a PS90 into an SBR changes it from its original factory configuration and voids the FN factory warranty. All conversions are completed by Armory of Kings using brand-new OEM FN PS90 rifles and are supported by the builder’s workmanship standards.