Polymer FLUX Raider 365!?

Published on December 4, 2025
Duration: 1:58

This guide details the assembly of the FLUX Raider 365 chassis with a Sig Sauer P365. It covers installing the FCU, slide, optic, weapon light, and magwell, culminating in a demonstration of magazine insertion and holster fit. The process is presented with clear, instructional steps, suitable for those looking to upgrade their P365 platform.

Quick Summary

The FLUX Raider 365 is a polymer chassis system designed to enhance a Sig Sauer P365 pistol, often by adding a brace for stability. Assembly involves installing the P365's Fire Control Unit (FCU) into the chassis, followed by the slide, barrel, recoil spring, optic (like a Sig Romeo-X), and weapon light (like a Streamlight TLR-7 sub).

Chapters

  1. 00:00Component Unboxing
  2. 00:05FLUX Raider 365 Chassis
  3. 00:16FCU and Slide Assembly
  4. 00:31Optic Installation
  5. 00:49Accessory Mounting
  6. 01:19Magwell and Final Testing
  7. 01:44Holster Compatibility

Frequently Asked Questions

What is the FLUX Raider 365?

The FLUX Raider 365 is a polymer chassis system that transforms a Sig Sauer P365 pistol into a more stable platform, often incorporating a brace for improved shooting dynamics. It allows for the integration of accessories like optics and weapon lights.

What components are needed to build a FLUX Raider 365?

To build a FLUX Raider 365, you will need a Sig Sauer P365 Fire Control Unit (FCU), slide, barrel, recoil spring, and the FLUX Raider 365 chassis. Additional accessories like an optic (e.g., Sig Romeo-X) and weapon light (e.g., Streamlight TLR-7 sub) are also commonly used.

How do you install the Fire Control Unit (FCU) into the FLUX Raider 365?

The Sig Sauer P365 FCU is carefully inserted into the designated slot within the FLUX Raider 365 polymer chassis. Ensure it is properly seated and aligned before proceeding with the assembly of other components like the slide and barrel.

What accessories are shown being installed on the FLUX Raider 365?

The video demonstrates the installation of a Sig Sauer Romeo-X red dot sight onto the slide and a Streamlight TLR-7 sub weapon light, enhanced with an Antimatter Industries Micro Wing, onto the chassis's accessory rail. A FLUX 365 XL Carry Magwell is also installed.

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