NFA rules may apply. Read the ATF's final brace rule here.
Read the FAQs first!
If you ask a question that is answered in the FAQ, you probably won’t receive a response.
Support contact information can be found at the bottom of the page, once you’ve read through the FAQs.
Due to high volume, please allow 3-5 business days for a response.
Do you have a military or first responder discount?
Yes! We offer military and first responder discounts through Verify Pass. Please visit our discounts page to get your coupon code.
What is the Raider compatible with?
The MP17 RAIDER is compatible with the Sig Sauer® M17/M18/P320™ series full size, compact, X-five™, X-five™ Legion, VTAC, and Tac Ops™ versions. The Raider is not compatible with the P320 XTEN or 45ACP versions of the P320.
It works with 9mm Luger, .40S&W, and .357 Sig models but IS NOT compatible with suppressor height sights or with .45 ACP models.
The Raider DOES NOT WORK with any other pistol make or model than what is listed above.
It WILL NOT work with M17/18 manual safety. You need to install a safety delete pin for the FCU to drop in.
Modifying the Raider chassis in any way (including but not limited to, optic mount chop or removing manual safety notches, coatings) may void the lifetime warranty.
My M17 has a manual safety, how do I install the FCU into the Raider?
We recommend that you install the manual safety delete pin from Sig. This pin will allow you to convert your FCU to one without the manual safety.
Modifying the Raider to fit the manual safety levers voids the warranty.
We highly recommend you do not modify the chassis in any way.
Do aftermarket P320 magazines work with the Flux Raider?
Yes, many aftermarket magazines do feed but some may not drop free easily from the magwells.
Aftermarket magazines tolerances vary widely and can have a very tight fit. We always recommend you use Sig P320 factory magazines as the Raider is designed around those tolerances.
It does not work with 15 round magazines.
I did not receive an email notification for the latest restock of the product I wanted, what do I do to make sure I am on the notification list?
We are now temporarily using a blind restock system as announced in August of 2022. We switched to this system due to demand and supply chain issues. Once our supply of units is larger and closer to reaching demand, we will be able to announce restocks again. We do have a newsletter where we will send periodical updates. As the supply chain gets healthier we will be able to notify those who are subscribed to the newsletter.
You can signup for the newsletter on the homepage.
Why don’t you do backorders or pre-sales on your products?
This is a question we get a lot and we will try to explain it the best we can. Right now we are experiencing a polymer shortage and we have not been able to get our parts made in the quantities we once could. We are looking into all options open to us to get past this hurdle. But because of this issue we are staying away from taking pre orders or backorders because we would have no idea of how long it would take to fulfill your order.
We also used to do preorders and it took us almost a year and a half to get out of that hole. We don’t want to take your money unless we have product that we can ship to you in a timely manner.
When will the Raider Holster be available?
Due to supply chain issues the project has been delayed but as we set up new manufacturing we will be able to make them. The old MP17 holster was not compatible with the Raider so we had to start from the ground up on a better holster that would work for both left and right handed shooters.
Are pistol braces legal?
Pistol braces are legal but the ATF has made the rules vague and confusing. See: https://www.federalregister.gov/documents/2023/01/31/2023-01001/factoring-criteria-for-firearms-with-attached-stabilizing-braces
While the current ATF pistol brace rule is a reality, there are many lawsuits challenging the pistol brace rule and have a very good chance of winning. So far three of the largest lawsuits have been granted a preliminary injunction which is providing relief to many pistol brace owners as well as offering hope for a positive outcome. So yes, pistol braces are legal but we recommend that you educated yourself with the ATF’s final ruling as what you do with your pistol is your responsibility. We do not offer any legal advice.
The Flux pistol brace is neither designed nor intended to be shouldered. Unlike a stock, the brace’s unusual thin shape is designed to curve around the users forearm and has no texture on the back for grip. We do offer stocks for those who are looking to SBR their pistol.
As a company, we do not offer legal advice. We are not responsible for any future legislation made regarding pistol braces.
It is your responsibility to know and comply with all local, state, and federal laws.
We do not ship to California, New York, Washington, Connecticut, or Massachusetts unless you are active LE/MIL. We do not ship outside the United States.
Is the flashmag/spare mag carrier a vertical grip?
No. The flashmag is designed and intended 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.
Can you holster the FLASHMAG?
Yes, we have a holster for the Flashmag but due to manufacturing issues it is taking longer to get back to making them.
Will the FLASHMAG hold other lights?
No, but we do have the Flashmag Rail that will fit most handgun lights and lasers. (Patent Pending)
FLUX Brace Compatible Pistols: CURRENTLY NOT IN PRODUCTION (new glock products are in the works)
G17 version – Glock 17, 19x, 45, 22, 31, 34, 35 Gen 4-5
G19 version – Glock 19, 23, 32 Gen 4-5
FLUX HEAVY – Glock 20, 21, 40, 41 Only Gen 4
GEN 3 version – Glock 19, 17, 17L Gen 3 ***Some early gen 3 Glocks are not compatible
Flux Braces ARE NOT compatible with Polymer 80 frames.
We are working on some super secret projects. To stay up to date with newly released models, please join our mailing list and follow our Instagram account.
You can’t use the brace along with a backstrap on any glock.
We don’t recommend stippling where the brace comes in contact with the Glock but it’s up to you. Fitment is very tight and could damage stippling.
Some extended slide releases will not work with our products.
Will you make models for other pistols?
Yes, we’ve got a lot in the works!
What lights does the Flux Brace work with?
Most Inforce®, Surefire®, Streamlight, and Modlite lights are compatible. We’re currently compiling a list of compatible lights. If you’re unsure your light will work first check rail clearance before installing.
We are not aware of any lights/lasers that do not work with the Flux Brace.
Is there an FDE version?
Sorry, not currently.
The brace currently only works with our holsters, but other companies are currently working on light compatible holsters.
Does it work with the 6-Second Mount?
No, sorry, we tried. We are working on our own non-reciprocating mount.
Are your products covered under any warranty?
All of our products are covered under a lifetime warranty.
Is there a lead time?
Refer to the product page that you are interested in for lead times.
Still have questions?
If the FAQs haven’t answered your questions, please reach out to [email protected] for additional support.
The use of Glock® 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® 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.