FLUX DEFENSE RAIDER X CHASSIS FOR SIG 320

The Flux Raider X is a premium P320 chassis system — stronger, lighter, and faster than ever, with over a dozen enhancements for durability, ergonomics, and compatibility. Not a firearm. Upgrade your P320 to a proven PDW chassis trusted by professionals.

The Raider X P320 is the next evolution of the Flux Raider platform — a premium personal defense weapon chassis system engineered for the SIG Sauer® P320, M17, and M18 family of pistols. It’s not a firearm — it’s a purpose-built chassis upgrade, born from real-world feedback from special operations units and thousands of everyday users. Stronger, lighter, faster — and ready to keep you in the fight.

Key Improvements on the Raider X

Reliability & Durability

Overtravel stop prevents over-insertion of magazines

Reinforced frame with upgraded single-gate mold (stronger, fewer weak points)

Molded-in insert for the ejection spring bolt for better reliability

Stronger mag catch spring for positive magazine locks

Upgraded fencing around the dual mag release

Increased rail-lock spring force

Ergonomics & Usability

Redesigned grip top for better access to mag release and safety

Front frame reshaped to accept extended rails for increased LOP

Smoother magwells for faster reloads

Improved grip texture

New matte finish reduces glare

Compatibility Upgrades

Enlarged suppressor cutout for shorter barrels, comps, or cans

Added slot to bottom Picatinny rail for more accessory options

Optic rail adjusted and slotted for improved fit with all optics

Slide channel under optic rail raised for better clearance with adjustable iron sights

Compatibility

Compatible with SIG M17/18 and P320 (9mm, .40 S&W, .357 SIG)

NOT compatible with: P320 XTEN, .45 ACP variants, suppressor-height iron sights, or 15-round magazines

M17/18 manual safeties must be removed and replaced with an OEM pin (simple mod)

Safety mechanism may not work with all aftermarket or adjustable triggers — verify before use

To use with P320 carry, compact, or subcompact slides, you must run a comp, threaded barrel, or suppressor — failure to do so may cause injury