How Easy Is It To Take Down and Disassemble the Ruger RXM FCU? Swapping Grip Modules

Published on February 27, 2025
Duration: 9:17

This guide details the process of disassembling and reassembling the Ruger RXM Firearm Control Unit (FCU). It highlights the differences from Glock disassembly, particularly the use of a single pin and a take-down lever system. The process involves clearing the firearm, removing the upper receiver, punching out a specific pin, and then manipulating a take-down lever to release the FCU. Reassembly follows a similar but reversed procedure, emphasizing correct pin and lever placement.

Quick Summary

Disassembling the Ruger RXM FCU involves clearing the firearm, removing the upper receiver like a Glock, and then focusing on the chassis system. A single pin is punched out from the left, and a take-down lever, which requires manipulating a spring, is used to release the FCU from the frame. Reassembly reverses these steps, with careful attention to the take-down lever and its spring.

Chapters

  1. 00:00Introduction to Ruger RXM & FCU Concept
  2. 00:49Glock vs. FCU Disassembly Comparison
  3. 00:93Clearing the Firearm
  4. 00:99Upper Receiver Disassembly (Glock-like)
  5. 01:24RXM Chassis System: Pin and Lever
  6. 01:44Punching Out the Pin
  7. 01:52Removing the Pin
  8. 02:03Manipulating the Pin
  9. 02:18Take Down Lever Spring
  10. 02:32Take Down Lever Spring Included
  11. 02:43Attempting FCU Removal
  12. 02:55First Time FCU Disassembly
  13. 03:06Difficulty with Take Down Lever
  14. 03:11Engaging the Spring and Lever
  15. 03:25FCU Released
  16. 03:41Hardest Part: The Spring
  17. 03:50Removing Remaining Parts
  18. 04:00FCU Components: Pins vs. Housing
  19. 04:13Housing Differences
  20. 04:28Reassembly: Inserting the FCU
  21. 04:31FCU Insertion Angle
  22. 04:44Reassembly Challenges
  23. 04:55Reinserting the Main Pin
  24. 05:11Slide Stop Spring Management
  25. 05:30Final Pin Installation
  26. 05:39Reattaching the Slide
  27. 05:46Conclusion: Ruger RXM Disassembly

Frequently Asked Questions

How does the Ruger RXM FCU disassembly compare to a Glock?

The Ruger RXM FCU disassembly is similar to a Glock in its initial upper receiver removal, but differs significantly in how the chassis system is detached. Instead of multiple pins, the RXM uses a single pin and a specific take-down lever that requires manipulating a spring to release the FCU from the frame.

What tools are needed to disassemble the Ruger RXM FCU?

For disassembling the Ruger RXM FCU, you will primarily need a punch to remove the main pin. A light tap from a hammer might be necessary in some cases, but care should be taken not to force components. Ensure the firearm is unloaded before starting.

What is the main challenge when reassembling the Ruger RXM FCU?

The most challenging part of reassembling the Ruger RXM FCU often involves the take-down lever. You need to push down the associated spring with a punch while simultaneously sliding the lever back into place, ensuring it clears the spring and seats correctly.

Can I use Glock parts with the Ruger RXM FCU?

While the upper receiver disassembly is Glock-esque, the RXM FCU itself has different components. The guide mentions that while some Glock trigger parts might be compatible, the housing is different, and compatibility with specific Glock generations for the housing is uncertain.

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