FLUX Defense Returns to Glock With the Redux Chassis for Gen 4 and Gen 5 Pistols

FLUX Defense has announced the Redux, a redesigned chassis system for Glock Gen 4 and Gen 5 pistols, The Tactical Wire reported November 3. The Redux marks the company's return to the Glock platform after several years focused exclusively on SIG Sauer-based products, including the Raider X for the P320 and the Raider 365 Ultralight for the P365.

The Redux attaches to the Glock's backstrap with a push-pin mechanism and adds a collapsing rear brace along with a forward carrier that holds one spare magazine ahead of the trigger guard. Product listings place the MSRP at $350. The chassis fits compact and full-size Gen 4 and Gen 5 models starting at the Glock 19-size frame and larger. Swapping the chassis from one Glock to another takes approximately three minutes, according to the product listing, in keeping with the modularity concept the company has applied across its SIG-compatible lineup.

FLUX Defense originally built its reputation on a pistol brace for Glock before transitioning to SIG Sauer hosts. The Raider X for the SIG P320 and the full line of P365 chassis — including the ultra-compact Raider 365 Ultralight shown at SHOT Show 2026 in January — have been the company's primary focus for several years. The Redux's return to Glock addresses a platform that remains the dominant duty and concealed-carry pistol in the U.S. civilian and law enforcement markets, and the product fills a gap the company has left open since it moved away from Glock-specific development.

The timing is relevant given the current regulatory environment. The ATF's formal end of NFA registration requirements for suppressors and short-barreled rifles, finalized this fall, has not directly resolved the status of pistol braces, but the enforcement climate is considerably more favorable than it was in 2023 and 2024. FLUX Defense's product line sits in territory that remains subject to ATF rulemaking, and buyers should stay current on brace-related regulatory developments.

FLUX Defense has not addressed whether the Redux will be extended to fit Glock's Gen 6 pistols — the G17, G19, and G45 Gen 6 that Glock unveiled in January 2026 with a redesigned backstrap — or other Glock frame sizes. That detail and full official specifications are expected to follow in manufacturer materials in the coming weeks.