SIG Sauer P320 FLUX Legion 9mm Compact, Legion Gray, 3.9 in Barrel, Integrated Compensator, XRAY3 Sights, 30+1, 2x 30-Round Mags
This factory SIG Sauer x FLUX Defense collaboration pairs the P320 fire control unit with a FLUX Raider-pattern chassis finished in Legion Gray. It adds a rear non-reciprocating top Picatinny optic mount, an integrated forward spare-magazine carrier, and a compact 3.9 in compensated slide. The collapsing, rapid-deploying brace and XRAY3 day/night sights make this a feature-dense, purpose-built FLUX Legion variant.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Rifling: Excellent - Sharp lands and grooves.
Specific Condition Notes: Shows minimal markings from previous handling and use. The bore is bright and clean. Refer to pictures for close-ups.
What's Included
- SIG SAUER factory hard case
- SIG SAUER owner's manual
- Two 30-round 9mm SIG P320-pattern magazines (with witness windows)
The FLUX Legion chassis integrates a forward spare-magazine carrier to speed reloads while keeping the profile compact. The chassis is molded with the marking NOT A VFG and finished to match the Legion Gray scheme.
The compact-length slide measures 3.9 inches and incorporates an integrated compensator to help tame muzzle rise. SIG XRAY3 day/night sights are installed, with a green-dot front and a low-profile notch rear for fast sight acquisition.
Controls are ambidextrous and purpose-built, including manual safety paddles marked FIRE and a dual-magazine release. A skeletonized trigger contributes to the Legion feature set, and the polymer frame and brace keep weight in check.
Mounting and accessory options include a rear non-reciprocating top Picatinny optic mount and a front accessory rail. The brace is polymer with twin guide rods and a spring-assisted, rapid-deploying, collapsing design. Capacity is 30+1, and the pistol comes with two extended magazines.

