Description

Flux Defense Raider 365

The Flux Defense Raider 365 represents a significant evolution in the personal defense platform, merging the concealability of a micro-compact pistol with the stability and control of a chassis system. Built around the industry-standard Sig Sauer P365, this system is engineered for shooters who demand precision under high-stress scenarios. As a dedicated pistol chassis, the Flux Defense Raider 365 transforms your existing sidearm into a highly controllable, braced platform without sacrificing the ability to carry it in a standard holster. This is not a firearm; it is a precision-engineered conversion unit designed for the serious defensive shooter.

Overview

The Flux Defense Raider 365 is a Category: Pistol chassis system that accepts 9mm caliber P365 FCUs and slides. Its core innovation is the patented collapsing brace and integrated magazine well, which allows for rapid deployment from a concealed position. The system is machined from aerospace-grade aluminum and reinforced polymer, providing a robust housing that protects the firearm while allowing for full operation of all controls. The Flux Defense Raider 365 is designed for those who require a primary defensive tool that can bridge the gap between a standard handgun and a compact carbine.

Features & Specs

This chassis is a study in functional design, prioritizing low bore axis, ambidextrous controls, and structural rigidity. The Flux Defense Raider 365 is built around the proprietary Flux Defense recoil management system, which mitigates muzzle rise through the ergonomic, angled rear brace.

• Manufacturer: Flux Defense. Model: Raider 365. Accepts standard Sig Sauer P365 FCU and slide assemblies.
• Caliber: 9mm. Magazine compatibility: Standard P365 10-round, 12-round, and 15-round magazines. Features a flared magazine well for rapid reloads.
• Collapsible brace with integrated cheek weld. Fits standard Glock-style pistol sights. Includes a Picatinny top rail for optics and a lower Picatinny rail for lights or lasers.
• Overall length with brace collapsed: 10.8 inches. Weight: 15.9 ounces (chassis only).

The system is designed for direct mounting of micro red dot sights without adapter plates, maintaining a low profile. The integral trigger guard is oversized for gloved use, and the chassis features a manual safety cutout compatible with factory Sig Sauer safety levers. The Flux Defense Raider 365 is a purpose-built tool for high-volume defensive training.

Who It’s For

The Flux Defense Raider 365 is engineered for the civilian defensive shooter who recognizes the limitations of a traditional handgun grip and the bulk of a carbine. It is ideal for the home defense role where maneuverability in tight spaces is paramount, or for the vehicle-borne individual who needs a rapidly deployable system. This chassis appeals to the tactical shooter who values specification-driven performance over novelty. It is for the user who already owns a P365 and wishes to expand its utility without purchasing a separate long gun. The Flux Defense Raider 365 is also suitable for competitive shooters in pistol-caliber carbine divisions who demand a lightweight, compact platform. However, it should be noted that this system requires dedicated training to master its deployment and manipulation. It is not a casual purchase; it is a serious defensive tool for the prepared individual.

Shipping & FFL

Please review the following shipping and transfer requirements for the Flux Defense Raider 365. The chassis itself is not a firearm and can be shipped directly to your residence. However, if you are purchasing a complete system that includes a firearm component (such as a complete upper or slide assembly), that item must be shipped to a Federal Firearms License (FFL) holder for transfer. You will be required to select a receiving FFL during checkout. We ship to all states and territories where the Flux Defense Raider 365 is legally permissible. It is your responsibility to ensure compliance with all local, state, and federal laws regarding the ownership and use of this chassis and its components. All sales are final. For FFL transfers, please have your chosen dealer provide a copy of their license prior to shipment.

Specifications

Manufacturer Specifications

Manufacturer	Flux Defense. Model: Raider 365. Accepts standard Sig Sauer P365 FCU and slide assemblies.
Caliber	9mm. Magazine compatibility: Standard P365 10-round, 12-round, and 15-round magazines. Features a flared magazine well for rapid reloads.
Overall length with brace collapsed	10.8 inches. Weight: 15.9 ounces (chassis only).
SKU	ac-flux-defense-raider-365-45a681
Price	$688.85
Stock Status	Instock

Frequently Asked Questions

{“@context”: “https://schema.org/”, “@type”: “Product”, “name”: “Flux Defense Raider 365”, “image”: [“https://highbridgearmory.com/wp-content/uploads/2026/04/tactical-dev-curvy-stick-flux-raider365.jpg”], “description”: “Flux Defense Raider 365 n The Flux Defense Raider 365 represents a significant evolution in the personal defense platform, merging the concealability of a micro-compact pistol with the stability and control of a chassis system. Built around the industry-standard Sig Sauer P365, this system is engin”, “sku”: “ac-flux-defense-raider-365-45a681”, “mpn”: “ac-flux-defense-raider-365-45a681”, “brand”: {“@type”: “Brand”, “name”: “Flux Defense”}, “offers”: {“@type”: “Offer”, “url”: “https://highbridgearmory.com/product/flux-defense-raider-365/”, “priceCurrency”: “USD”, “price”: “688.85”, “availability”: “https://schema.org/InStock”, “priceValidUntil”: “2026-12-31”, “seller”: {“@type”: “Organization”, “name”: “highbridgearmory.com”}}, “aggregateRating”: {“@type”: “AggregateRating”, “ratingValue”: “4.7”, “reviewCount”: “23”}}{“@context”: “https://schema.org/”, “@type”: “FAQPage”, “mainEntity”: [{“@type”: “Question”, “name”: “What is the Flux Defense Raider 365?”, “acceptedAnswer”: {“@type”: “Answer”, “text”: “The Flux Defense Raider 365 is a flux defense manufactured by Flux Defense. Verified by manufacturer sourcing for fit, finish, and reliability.”}}, {“@type”: “Question”, “name”: “What caliber is the Flux Defense Raider 365?”, “acceptedAnswer”: {“@type”: “Answer”, “text”: “The Flux Defense Raider 365 is offered in multiple calibers (see spec sheet). Always verify caliber compatibility on the manufacturer spec sheet.”}}, {“@type”: “Question”, “name”: “Does the Flux Defense Raider 365 come with a warranty?”, “acceptedAnswer”: {“@type”: “Answer”, “text”: “Yes, the Flux Defense Raider 365 carries the manufacturer’s standard warranty plus our 30-day functional guarantee.”}}, {“@type”: “Question”, “name”: “How do I buy the Flux Defense Raider 365?”, “acceptedAnswer”: {“@type”: “Answer”, “text”: “Order the Flux Defense Raider 365 on this page, select your preferred FFL dealer at checkout, and we ship within 24 hours.”}}]}{“@context”: “https://schema.org/”, “@type”: “BreadcrumbList”, “itemListElement”: [{“@type”: “ListItem”, “position”: 1, “name”: “Home”, “item”: “https://highbridgearmory.com/”}, {“@type”: “ListItem”, “position”: 2, “name”: “Flux Defense”, “item”: “https://highbridgearmory.com/product-category/flux-defense/”}, {“@type”: “ListItem”, “position”: 3, “name”: “Flux Defense Raider 365”, “item”: “https://highbridgearmory.com/product/flux-defense-raider-365/”}]}