ON SALE! SIG SAUER 320FLUX-9-LEGION P320 FLUX LEGION 9MM

The SIG Sauer P320 FLUX LEGION (320FLUX-9-LEGION) is a full-size, striker-fired 9mm pistol built as a factory collaboration between SIG SAUER LEGION and FLUX Defense, combining a P320 Fire Control Unit with a FLUX chassis, rapid-deploying stabilizing brace, and integrated compensated LEGION slide, making it the most capable factory-complete modular 9mm pistol-carbine hybrid platform available for tactical shooters, competitive shooters, and advanced range users who want carbine-style stability in a pistol-legal configuration.

Key Features

• Part number: 320FLUX-9-LEGION
• Caliber: 9mm Luger
• Capacity: 30+1 rounds
• Barrel length: 3.9 inches
• Action: Semi-automatic, striker-fired
• Grip module/chassis: LEGION Gray FLUX Defense chassis
• Slide material: Stainless steel
• Slide finish: LEGION Gray Cerakote with integrated compensator
• Trigger: LEGION skeletonized, flat-face, single action
• Sights: XRAY3 day/night, tritium front and rear
• Optic mount: Non-reciprocating Picatinny rear rail
• Front accessory rail: Picatinny, full-length
• Stabilizing brace: Rapid-deploying single-finger spring-actuated
• Safety: Ambidextrous thumb safety
• Magazine release: Ambidextrous dual magazine release system
• Magwell: Integrated flared
• Overall length: 10.9 inches collapsed
• Overall height: 6.1 inches
• Overall width: 1.6 inches
• Sight radius: 5.9 inches
• Weight with magazine: 49.2 ounces
• Magazines included: Two 30-round steel P320 magazines
• Ships in SIG factory hard case
• Backed by SIG Sauer Infinite Guarantee, fully transferable

Special Features

• The FLUX Defense chassis replaces the standard P320 grip module entirely, housing the P320 Fire Control Unit inside a full-length, carbine-style chassis that provides a consistent two-hand interface and a rigid mounting platform for optics, lights, and accessories.
• The single-finger rapid-deploying stabilizing brace deploys instantly under spring tension with a single lever press, going from folded to fully extended in one motion, allowing the shooter to transition from a holster-compatible profile to a fully supported shooting position faster than any manual folding brace system.
• The integrated compensator is built directly into the LEGION Gray slide at the factory, venting gases upward at the muzzle to keep the front of the pistol on target during rapid fire strings without adding external length or requiring a separate muzzle device installation.
• The non-reciprocating rear Picatinny optic mount holds a red dot or magnified optic independently of the slide's movement, meaning the optic does not cycle with the action and the zero remains constant across every round fired.
• The LEGION skeletonized trigger reduces trigger shoe mass through precision machining while maintaining the flat-face geometry and consistent break that LEGION Series triggers are known for, delivering a pull that benefits from the lower inertia of the lighter component.
• The ambidextrous dual magazine release system provides two independent release points on both sides of the chassis, giving the shooter positive and fast magazine drops regardless of hand dominance or grip position during competition or tactical use.
• The integrated flared magwell opens the magazine well at the base of the chassis to funnel 30-round magazines into the pistol faster under stress, which directly supports the high-capacity, fast-reload use case the FLUX LEGION is designed for.
• The XRAY3 sights combine a tritium front post with a bright green photoluminescent ring against an orange-outlined rear notch, producing a usable sight picture in daylight, dusk, and no-light conditions without batteries or activation.

Practical Benefits

• The two included 30-round magazines give you a deep load for training, competition, and tactical applications from the moment the case opens, with enough capacity to run extended strings without a reload.
• The non-reciprocating optic mount means you can run a red dot or low-powered variable optic at a fixed zero with confidence, which dramatically extends the effective engagement distance of a 9mm pistol platform compared to iron sights alone.
• The full-length front Picatinny rail gives you an industry-standard mounting surface for lights, lasers, and vertical grips, allowing you to build a fully accessorized setup without hunting for adapter solutions.
• The carbine-style chassis produces a supported two-point shooting interface that allows faster, more accurate fire at distance compared to a standard pistol grip, while the folded brace keeps the overall package compact enough for vehicle storage, bag carry, and home defense staging.
• The FLUX LEGION ships as a complete, factory-assembled, LEGION-grade platform, meaning SIG has already performed the fit, trigger tuning, and finish matching that would cost considerably more if assembled from individual components.
• If you want a factory-built, LEGION-grade 9mm pistol that delivers carbine-class stability, 30-round capacity, a non-reciprocating optic mount, and a rapid-deploying brace in a single ready-to-run package, the SIG Sauer P320 FLUX LEGION delivers every one of those capabilities out of the case.

The SIG Sauer P320 FLUX LEGION (320FLUX-9-LEGION) in 9mm is a capable tool for the tactical shooter, advanced competitor, or home defense operator who demands a factory-complete, modular 9mm platform that bridges the gap between pistol maneuverability and carbine-style control.