Hey Squat Squad! Eight years after the original FLUX for Glock showed up, Flux Defense is going back to the platform that started it all. The new FLUX Redux is a completely reworked kit for Gen 4 and Gen 5 Glock pistols. Flux didn’t just put the old kit back into production. It took everything it learned building the Raider chassis and redid the materials, the ergonomics, the way the kit locks to the pistol and the mag release. The kit also gets a new spring-loaded brace/stock.
Quick note: this one is based on Flux Defense’s press release and its own product page. I haven’t had a Redux on a Glock yet.
TL;DR
- What it is: a two-piece kit for Gen 4/Gen 5 Glocks. The Flashmag (spare-mag holder) and the brace/stock can be used separately or together.
- What’s new: upgraded materials, a deeper and more secure interface with the pistol, a smoother mag release and a spring-loaded brace/stock that deploys fast but keeps the package compact.
- New shroud: aluminum, works with ported and compensated pistols, has ambidextrous thumb ledges, and comes off for suppressor use.
- Suppressor clearance: Flux says there’s room for many common pistol suppressors.
- Availability: Flux’s product page lists the Redux Kit as coming November 6, 2026, with a waitlist open now.
What Flux changed
The original FLUX was one of the first kits to turn a Glock into a compact, braced package with a spare mag riding up front where your support hand goes. Since then Flux has mostly moved toward fully integrated chassis like the Raider series for SIG pistols. The Redux keeps the original two-piece layout on purpose. Flux says that’s partly about flexibility for customers in states where the more integrated systems are restricted. You can run the Flashmag alone, the brace/stock alone, or both together, as long as you set it up according to your local laws.
Here are the main features from the release:
- Spring-loaded brace/stock built for fast deployment.
- Dual magazine capability: the spare mag is still integrated, now with Flux’s patented release button.
- Redesigned magazine release that Flux says is smoother.
- New aluminum shroud with ambidextrous thumb ledges, room for ported and compensated slides, and the option to remove it for a can. Flux says it also leaves room for future upgrades.
- Upgraded construction: precision injection-molded polymer parts made from a composite that Flux says was developed to replace metal engine parts.
- Improved ergonomics and a deeper, more secure interface with the pistol.
Glock compatibility
It’s Gen 4 and Gen 5 only. The press release lists the G17, G17L, G19X, G22, G34, G35, G46 and G47. Flux’s product page has a slightly different list (19X, 17, 17L, 45, 47, 34, 35, 22 and 31). If you’re running a G45, G46 or G31, check with Flux before you order.
Who it’s for
- Glock owners who want a compact, fast-deploying package for home defense, the truck or bag carry. Those are the kinds of uses Flux itself lists.
- Shooters in restrictive states who couldn’t run Flux’s integrated chassis but can configure a two-piece kit legally where they live.
- Suppressor and comp guys, thanks to the removable shroud, the clearance for ported slides and the room for many common pistol cans.
Our take
I like this move. Flux built its name on Glocks and then spent years on SIG-based chassis, so going back with a “remastered” version instead of just re-releasing the old kit is the right call. To me, the most interesting part is the modular two-piece design. A lot of the PDW-kit market has gone fully integrated, and that leaves people in restrictive states out. A kit you can configure piece by piece opens that up. The removable aluminum shroud for comps and cans is a smart upgrade too. What I want to see once these are in people’s hands: how solid the lockup feels compared with a full chassis, how the spring-loaded brace/stock holds up after a lot of deployments, and which suppressors actually clear. If you’ve got a G17 or G19X sitting in the safe, this is one to watch.
Where to find it
The Redux Kit is sold through Flux Defense. The Redux – Glock Gen 4/5 page has the waitlist and the compatibility list.
Related reading on SlavGuns
- Troy A4 Other Firearm 9mm Review: Glock-Mag PCC Worth It?
- Angstadt Arms MDP-9 First Look: Roller-Delayed 9mm AR PCC
- Off Grid Suppressors Launches Five 3D-Printed Cans
Sources
- Press release via The Outdoor Wire: FLUX Defense Returns to Glock with the New Redux
- Flux Defense: Redux – Glock Gen 4/5 product page
- Flux Defense videos: Redux reveal and What is the Redux?
Would you run the Redux as a two-piece kit or go all-in on an integrated chassis? Let me know in the comments. Keep on squatting!
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