Flux Defense Raider 365 Ultralight – FDE PDW Chassis (161-00026)

The Raider 365 Ultralight in Flat Dark Earth is Flux Defense’s polymer PDW chassis for the SIG Sauer P365 — not a firearm. Advanced polymer composite and S7 tool steel keep the chassis at 8.7 oz, with a Type III hard-coat anodized shroud, spring-loaded brace, and patented Speedload System. This listing is the FDE Ultralight only. Flux part 161-00026, UPC 850080943014.

PDW Control, Carry Weight

Built to ride IWB, OWB, or off-body without weighing you down. Collapsed: 9.75" × 4" × 1.375". Extended: 18.5" × 4" × 1.25". Length of pull 13.5". Flux describes the package as about 3" shorter and 85% lighter than an MP5K, with more capacity, accuracy, and control than a pistol alone.

What You Get on the Chassis

• Spring-loaded brace/stock system for compact carry and fast deployment.
• Patented Speedload System — faster reloads with up to 50 rounds on the gun using compatible extensions.
• Removable shroud included; suppressor-friendly layout (max 1.55" can diameter).
• Optional flared magwell and optional 6" barrel available separately.

Compatibility

Recommended slides: P365XL, TACOPS, or P365 FUSE. Do not use standard 3.1" P365 slides or the XMACRO Comp / AXG Legion slide. Magazines: 17, 21, and 25 round P365 magazines. Not compatible with 12–15 round magazines. Firearm, slide, barrel, and magazines are not included. An adjustable IWB/OWB holster is included.

Flux Raider 365 Ultralight FDE Specifications

Frequently Asked Questions

Is this a complete gun?
No. The Ultralight is a non-serialized chassis accessory. Supply your own P365 FCU, slide, barrel, and magazines.

Which slides fit?
Flux recommends P365XL, TACOPS, or P365 FUSE. Do not use 3.1" standard slides or the XMACRO Comp / AXG Legion slide.

Magazine capacity?
Works with 17, 21, and 25 round P365 magazines. Not compatible with 12–15 round magazines.

What color is this SKU?
Flat Dark Earth (FDE) chassis — part 161-00026.