EFFEN 90 Tri-Rail – Precision Cut PS90 Billet Upper Receiver


Enhance the aesthetics of your PS90 with the Effen 90 Tri-Rail Custom Billet Receiver. Perfect for your SBR project.

*Serialized Component. FFL required for the shipping. This item can take 5-7 days to ship.

SKU: effen-90-tri-rail Categories: ,


The EFFEN 90 Tri-Rail PS90 Custom Billet Receiver is one of those upgrades that will make your PS90 look amazing. The EFFEN 90 has its own unique serial number and replaces the Factory FN upper receiver.  Perfect for your next SBR project.

The EFFEN 90 Tri-Rail uses the same action and lower assembly as the regular PS90. The Effen 90 Tri-Rail Upper Receiver is a stripped component that requires additional parts for assembly and operation. You must either purchase the optional parts kit or move the parts over from your factory upper receiver.

  • Precision CNC’d out of billet 6061 aluminum
  • Weighs 14.8 oz (35% lighter than the Factory FN receiver)
  • Tactical low profile, integral, 12 lug, mil-spec picatinny rail
  • Monolithic single piece construction
  • Billet 6061 aluminum construction provides higher strength than the factory cast receiver
  • Durable black anodized finish
  • Marked 5.7×28
  • Great for NFA SBR builds (CMMG Barrels recommended) or upgrading your factory receiver
  • Will accept standard FN PS90 parts
  • Simply THE BEST aftermarket PS90/P90 receiver ever made