Polymer FLUX Raider 365!?

Published on December 4, 2025
Duration: 1:58

This video provides a comprehensive, step-by-step guide to assembling the FLUX Raider 365 chassis with a Sig Sauer P365. It covers the unboxing and installation of all core components, including the FCU, slide, barrel, optic (Sig Sauer Romeo-X), weapon light (Streamlight TLR-7 sub with Antimatter Industries Micro Wing), and a custom magwell. The guide concludes with a demonstration of holstering the completed build in a dedicated FLUX Raider 365 G2 holster, showcasing a professional-level firearm modification.

Quick Summary

The FLUX Raider 365 allows for a rapid conversion of a Sig Sauer P365 into a pistol-caliber carbine. This build includes the P365 FCU, slide, barrel, recoil spring, Sig Sauer Romeo-X optic, Streamlight TLR-7 sub with Antimatter Industries Micro Wing, and a FLUX 365 XL Carry Magwell.

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 components are needed to build the FLUX Raider 365?

To build the FLUX Raider 365, you'll need a Sig Sauer P365 Fire Control Unit (FCU), slide, barrel, and recoil spring. Additionally, an optic like the Sig Sauer Romeo-X, a weapon light such as the Streamlight TLR-7 sub, and a FLUX 365 XL Carry Magwell are shown in this build.

How do you install the Sig Sauer P365 FCU into the FLUX Raider 365 chassis?

The Sig Sauer P365 Fire Control Unit (FCU) is installed directly into the polymer chassis of the FLUX Raider 365. This is typically a straightforward process involving aligning the FCU and securing it within the chassis, often with minimal tools required.

What accessories are recommended for the FLUX Raider 365 build?

For this FLUX Raider 365 build, a Sig Sauer Romeo-X compact red dot sight is mounted on the slide. A Streamlight TLR-7 sub weapon light, enhanced with an Antimatter Industries Micro Wing, is attached to the front shroud for improved ergonomics and illumination.

Does the FLUX Raider 365 have an integrated spare magazine carrier?

Yes, the FLUX Raider 365 chassis features an integrated spare magazine carrier. This allows for quick access to a backup magazine, enhancing the platform's utility for self-defense or tactical applications.

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