Why it matters: Flux Defense built its name on a Glock brace before moving to the SIG P320, and Glock owners have been asking for a return ever since. An extended range session with the new Redux chassis gives an early look at how it handles, and at what changes once suppressors and fast triggers are added.
The YouTube channel Dirty Civilian has published a range video on the Flux Redux, a new pistol-caliber chassis from Flux Defense built around Glock pistols. The video, titled "The New Glock FLUX Redux | SBR PDW + FRT + Suppressed," opens with a scripted comedy sketch, then follows the hosts through a day of shooting the Redux on several Glocks: unsuppressed, with three different suppressors, with a compensator, and with a forced reset trigger. Flux had not published a price or ship date for the Redux at the time of the video, and its website still lists only its P320 and P365 chassis.
From the original Flux Glock brace to the SIG P320 Raider
In the video, the lead host says he was an early adopter of Flux's original Glock chassis and used it for years. He says the company stopped making it because of material and manufacturing problems and moved to the SIG P320 platform, where it developed the Raider and later the Raider X, followed by versions for the smaller P365. The Glock return, he says, is something buyers have been asking about for years.
The hosts put the Redux side by side with a P320 Raider and describe it as the simpler of the two. Opening the brace works the same way, with a downward push on a lever. Unlike the Raider, the Redux has no single button that drops both the pistol's magazine and the spare, no built-in QD sling socket and no top shroud for mounting an optic out ahead of the slide, which the hosts say makes it harder to use with night vision. The red dot stays on the Glock's slide. A removable aluminum shelf at the front protects the support-hand thumb from the muzzle end of the slide.
According to the hosts, the Redux fits Gen 4 and Gen 5 compact and full-size Glocks, the Glock 19 and larger. They swap pistols during the video by removing a screw at the front and a pin at the rear, and say a swap takes about three minutes. They tested a Gen 5 Glock 34 and a Gen 5 Glock 45.
Manual of arms, mag release and slide stop in the Redux
Much of the first half covers handling. Because the chassis attaches at the backstrap and adds a beavertail, the hosts say the Glock's own magazine release is hard to reach for shooters with smaller hands, and one recommends an extended aftermarket release. With the brace collapsed, the rails sit over the slide stop, which the hosts say makes locking the slide back difficult. They describe the fix as learning a new manual of arms, and demonstrate the reload sequence they settled on.
Red dot parallax, the Aimpoint Acro and suppressor fit
The hosts report that a slide zeroed as a pistol shot to a different point of impact once installed in the chassis. Jonathan, one of the hosts, attributes this to parallax: with the optic close to the eye instead of at arm's length, small changes in head position move the point of impact. His advice is to zero the optic in the chassis, with the cheek weld the shooter will actually use. The group says it spent about 500 rounds diagnosing poor accuracy on large targets at short range, concluded that optic choice was the cause, and found the Aimpoint Acro gave the most consistent results. They say they bought their optics themselves and are not sponsored by Aimpoint.
“The hosts say the Redux keeps the Glock's simplicity, and most of the problems they hit came from what they added to it.”
J.D. Whitfield, The ReticleWith the front shroud installed, only a slim suppressor fits; the hosts used a JK Armament model. With the shroud removed, they ran a Stealth Additive Works Shiv, which they named their favorite, and a SilencerCo Omega 9K. They also fired 158-grain subsonic ammunition from Palmetto State Armory through it.
The forced reset trigger build took the most work. The hosts report double feeds, a failure to extract, malfunctions once the gun got hot after two magazine dumps, a need to re-lubricate often, and older magazines that did not feed fast enough. The trigger left no room for the slide stop until they fitted a Gen 4 slide stop in the Gen 5 frame. They list the variables they believe affect reliability: slide cuts and weight, optic weight, recoil spring weight, the trigger, the suppressor or compensator, lubrication, magazine springs, ammunition and the overall condition of the gun.
The hosts also raise a concern about a forced reset trigger in a defensive gun. In their setup it could not be switched back to semi-automatic, and in a test at 50 yards the lead host says he could not let off fast enough to fire fewer than about three rounds per pull. "You're still legally and morally responsible for every single trigger pull," he says. The group concludes that the forced reset configuration is closer to a range toy, while the Redux with a stock trigger, suppressed or not, is in their words "pretty darn viable" as a bag gun or home-defense setup. They add that the chassis does not make anyone a better shooter.
The video carries sponsor segments for Silencer Shop, Rifle Speed, Ammo Squared, Steel Industries and Wet Works, and closes with a note about the channel's new merchandise website.
For context
- Flux Defense's first product, around 2019, was a brace for Glock pistols; it moved to the SIG P320 because that pistol's serialized part is a removable fire control unit that can be dropped into a chassis.
- SIG Sauer now sells a factory package, the P320 Flux Legion, that pairs a P320 fire control unit with a Flux chassis.
- A May 2025 settlement between the Justice Department and Rare Breed Triggers ended federal enforcement against forced reset triggers that meet a court-defined standard, though some states still ban them.
- Since January 1, 2026, the federal tax on registering suppressors and short-barreled rifles has been $0, but ATF registration is still required.
