FNH PS90 / P90 SBR Disassembly & Reassembly

Published on August 21, 2019
Duration: 4:20

This video provides a straightforward guide to disassembling and reassembling the FN PS90/P90 SBR. The presenter, from Arm&Gun, demonstrates how to field strip the firearm into its main components: upper receiver, lower receiver, bolt carrier group, and trigger pack. Key steps include cocking the trigger pack before disassembly and ensuring proper alignment during reassembly. The presenter highlights the simplicity and slickness of the design.

Quick Summary

To disassemble an FN PS90/P90 SBR, first ensure it's unloaded and cock the trigger pack. Press a spring-loaded button to separate the upper and lower receivers. Slide the bolt carrier group forward and lift it out. Remove the trigger pack by lifting the butt plate and a small tab.

Chapters

  1. 00:00Introduction and Overview
  2. 00:19Initial Safety Check and Magazine Removal
  3. 00:36Cock the Trigger Pack
  4. 00:47Upper Receiver Separation
  5. 01:15Bolt Carrier Group Removal
  6. 01:34Lower Receiver and Trigger Pack Removal
  7. 01:58Trigger Pack Details
  8. 02:12Trigger Pack Reassembly
  9. 02:30Magazine and Storage Case Showcase
  10. 03:30Bolt Carrier Group Reassembly
  11. 03:51Upper and Lower Receiver Reassembly
  12. 04:00Conclusion and Final Thoughts

Frequently Asked Questions

How do you start the disassembly process for an FN PS90 or P90 SBR?

Begin by ensuring the firearm is unloaded. Remove the magazine and visually confirm the chamber is clear. It's crucial to cock the trigger pack before proceeding to prevent the bolt carrier from getting stuck.

What is the first major component to separate during FN PS90/P90 disassembly?

The first major component to separate is the upper receiver from the lower receiver. This is achieved by pressing a spring-loaded button, which allows the two main parts of the firearm to be pulled apart.

How is the bolt carrier group removed from the FN PS90/P90?

To remove the bolt carrier group, slide it forward within the upper receiver until it can be lifted straight out. It's designed to come out easily once it reaches the end of its travel.

What is the procedure for removing the trigger pack from an FN PS90/P90?

First, lift the butt plate straight up, as it's held by tongue and groove slots. Then, locate and lift a small tab on the trigger pack assembly to release it from the lower receiver.

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