Welcome to the Flux Defense Frequently Asked Questions: your go-to resource for everything you need to know about our cutting-edge personal defense weapons. Whether you’re exploring our innovative products for the first time or need guidance on installation, legal ownership, shipping, or support, our detailed FAQs have you covered. Get clear answers, expert tips, and helpful insights so you can make the most of your Flux Defense system — start exploring our FAQs below!
The Raider X and MP17 are compatible with all Sig Sauer® P320 slides chambered in 9mm, .357 SIG, and .40 S&W.
However, slides equipped with suppressor-height sights will require removal of the rear sight for proper fit with the Raider chassis.
Incompatible Configurations:
- Not compatible with the P320 XTEN, .45 ACP models, or slides with integral compensators or unusual rear profiles
- Does not accept 15-round magazines due to chassis geometry
Manual Safety FCUs:
If your M17/M18 includes a manual safety, the FCU will not fit by default. You must install a manual safety delete pin from Sig Sauer.
Modifying the chassis to accommodate safety levers is not recommended and voids the warranty.
Modifying or altering the chassis in any way may affect function and will void the lifetime warranty.
The Raider 365 is designed for use with the 9mm Sig Sauer® P365 platform.
Compatible Components:
- All P365 FCUs (manual safety and non-safety versions)
- Slides XL-length and longer (e.g., XL, XMacro, Spectre Comp)
- All P365 triggers
- 17-round magazines and larger
Incompatible or Not Recommended:
- Standard-length P365 slides. These may have cycling issues and may damage the barrel shroud if used without a 6” barrel.
- .380 ACP model of P365 is not compatible.
Notes:
Use the longest barrel available for optimal safety and performance.
The Flux Legion Raider uses the same chassis as the Raider X and supports all the same accessories, including mounts, braces/stocks, and other components.
Key Difference: It comes equipped with the ported AXG Legion slide, which offers excellent recoil compensation but is not compatible with threaded barrels.
To Suppress: You must swap the ported slide for a non-ported slide to run the Legion Raider with a suppressor.
Most 9mm and multi-cal pistol suppressors work with the Raider X, though tuning will most likely be required.
We recommend using an XCARRY or compact-length slide for best results.
Key Components for a Suppressed Setup:
- Lighter Recoil Spring: Improves cycling with backpressure
- Booster (Nielsen Device): Essential for tilt-barrel systems
- Ammunition: Subsonic or standard pressure preferred for consistent operation
With the right configuration, suppressed performance is smooth and reliable.
Yes — the 6-inch barrels for the Raider 365 are planned to return. While a specific restock date has not been announced, we are actively working to bring them back into production.
The 6″ barrel, sometimes referred to as the Big Black Barrel, was designed to maximize performance, accuracy, and suppressor compatibility with the Raider 365 chassis. Its extended length ensures full coverage within the chassis and optimal alignment with muzzle devices.
For updates on restocks, sign up for the Flux Defense newsletter or follow their official social media channels.
Yes, discounts are available through Verify Pass. Visit the discounts page before checkout to receive your coupon code.
Note: Discounts cannot be applied retroactively.
All Flux Defense products are backed by a lifetime transferable warranty covering defects in materials and workmanship.
Modifications that void the warranty include (but are not limited to):
- Cutting or altering the optic mount
- Removing safety notches
- Painting or cerakoting the chassis
A rebuild service is available for modified units that fall outside warranty terms.
- Contact [email protected] before returning anything.
- Items must have an RMA number before being sent back.
- Used, altered, or damaged items are not eligible for a refund.
- Returns not accepted after 30 days from shipment.
- 5% restocking fee applies to cancellations.
- Shipping costs are non-refundable.
- Do not send firearms, FCUs, or ammunition.
- Returns are not accepted if restricted by law or regulation changes.
Yes — a Glock-compatible Raider is actively in development.
While there is no confirmed release date, we’re getting close. A Ruger RXM version is also underway and will follow. Stay updated by subscribing to our newsletter or following us on social media.
If the FAQs haven’t answered your questions, please reach out to:
- Customer Support: [email protected]
- Law Enforcement/Military Sales: [email protected]
- Dealer Sales: [email protected]
- Marketing/Media: [email protected]
Disclaimer
The use of Glock® (us.glock.com) is merely to advertise the sale of an aftermarket conversion for Glock pistols, and the makers of the Flux Brace are not affiliated in any manner with or otherwise endorsed by Glock®, Inc.
The use of Sig Sauer® (sigsauer.com) is merely to advertise the sale of an aftermarket conversion for Sig® pistols, and the makers of the Flux Brace are not affiliated in any manner with or otherwise endorsed by Sig Sauer®, Inc.
