Original Flux Raider – Sig P320



1-2 week lead time. Comes with RH brace by default

Out of stock

SKU: flux-raider Category:


NOTICE: All NFA and State rules apply. Flux Defense does not offer legal advice. Due to the recent ATF 2021R-08F ruling regarding pistol braces, we acknowledge to our customers that  it considers most braced pistols an NFA item.


(For bulk LE and Military sales contact: [email protected])

*Not a firearm. The Raider is a chassis system designed for the P320/M17 family of pistols. The extension rails can accept a brace or a stock. The brace version is neither designed nor intended to be shouldered. SBR stocks are available for those looking to register their Sig P320 as an SBR.

Warning! Failure to ensure proper safety function with your trigger could lead to serious injury or death. WARNING! Safety mechanism does NOT work with some aftermarket triggers. The built in Raider manual safety is designed to work with factory Sig Sauer trigger shoe.  with Overtravel Safeties or forward set trigger kits such as (Agency Arms, Armory Craft, Gray Guns, Keres Dynamics, Apex, etc.)  will NOT work

Developed around feedback from special operations – the new MP17 Raider is stronger, lighter and faster. Incorporating a revolutionary new reloading system, it can get you back in the fight in less than a second.


  • New injection molded advanced polymer developed to replace metal engine parts

  • Dual Mag Release system for lightning fast reloads (Patent Pending)

  • Flared magwells.

  • 2X QD sling positions.

  • More ideal optic mount height (pic rail)

  • Spare battery compartment.

  • New closed system for reliability against dust and debris.

  • Overall Dimensions Collapsed 11”L X 6”H X 1.7”W

  • Extended length 18″
  • Lighter: 18 oz (Chassis only) 40oz (assembled)

  • Chrome Moly Steel Nitride finish for maritime use.

  • Easier installation and improved ergonomics.

  • Now accepts larger diameter suppressors.

COMPATIBILITY LIST: It is compatible with ALL P320 variants. (Will not work with suppressor height iron sights.) Is NOT compatible with 15 rnd magazines. WARNING! To use the P320™ carry, compact, and subcompact, you must use a comp, threaded barrel, or suppressor or serious injury could occur This is just a precaution so your fingers stay safe.  (Will not work with M17/18 manual safety unless you dremel safety lever slots in the Raider chassis which we do not recommend. We recommend you install a safety delete pin from Sig for the FCU to drop in) Modified Raiders. We do not allow returns of Raiders that have been modified.

ATTENTION: This item is designed to accept an arm brace for a pistol or a stock for SBR’s. Check your local and state laws. The stocks are also available for those who want to form 1 their Sig P320 as an SBR.

Caution: Watch instruction video before installing. Read warnings before use.

*Does not a include firearm, fire control group or slide. Does not include holster, lights, sling, red dots or other accessories pictured.

Note: Firearm manufacturer’s warranty may be voided by alterations to your firearm.

WARNING: Always wear proper eye an ear protection. As with any pistol, keep your hand away from muzzle at all times. Read all warnings and watch installation video before ever using product. All local, state and federal laws apply.

The use of Sig Sauer®, Sig P320™, M17 and other models is merely to advertise the sale of an aftermarket conversion for Sig pistols and the makers of this product are not affiliated in any manner with, or otherwise endorsed by Sig Sauer® Inc.

Warning: The pistol brace version is designed and intended to be used as a pistol with one hand.

The built-in mag carrier is designed and intended only as a spare mag carrier, not as a vertical grip. There is no designed texture for gripping. Furthermore it is specifically designed so you cannot wrap your thumb around it like a vertical grip. There are multiple other spare mag carriers on pistols on the market. As a company, we do not offer legal advice. It is your responsibility to comply with all local, state, and federal laws.

We do not ship to California, New York, Washington, Connecticut, or Massachusetts. We do not ship outside the United States.

Links to states legislature below.

(WA – https://lawfilesext.leg.wa.gov/biennium/2023-24/Pdf/Bills/House%20Passed%20Legislature/1240-S.PL.pdf?q=20231025160443.

(CA – https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?sectionNum=30515.&lawCode=PEN)

(NY – https://gunsafety.ny.gov/system/files/documents/2021/01/pistols_banned_features.pdf)

(MA – https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXX/Chapter140/Section131

(CT – https://www.cga.ct.gov/2013/rpt/2013-R-0241.htm)

Additional information

Weight 8 oz

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