Flux Defense Raider X Chop Top “El Camino” – Black (161-00040)

The Chop Top “El Camino” is Flux Defense's Raider X chassis for the SIG Sauer® P320 / M17 with the non-reciprocating optic mount removed — Flux's own wording is “Raider X with a haircut.” It is not a firearm, and no firearm is included. This listing is the Black (BLK) Chop Top only. Flux part number 161-00040, UPC 850080943496.

Why Chop the Top

• Fits into a smaller space — easier to conceal than the full optic-hood chassis.
• Keep the optic on the slide so you can swap the slide and FCU between pistol and chassis without fighting a chassis-mounted optic rail.
• Lower optic height over bore when running a slide-mounted red dot.
• Flux states the Chop Top Raider is compatible with optic-mounted slides and suppressor-tall sights.

Raider X Platform Underneath

Under the chopped optic hood, this is still the Raider X evolution of the Flux PDW chassis: reinforced single-gate mold, magazine overtravel stop, stronger mag catch spring, dual mag release fencing, improved grip texture and magwells, enlarged suppressor cutout, and the rest of Flux's published Raider X reliability and ergonomics updates. Same host family: SIG M17/M18 and P320 in 9mm, .40 S&W, and .357 SIG.

Compatibility Notes

Flux states it is not compatible with P320 XTEN, .45 ACP variants, or 15-round magazines. M17/M18 manual safeties must be removed and replaced with an OEM pin. To use P320 carry, compact, or subcompact slides, Flux requires a comp, threaded barrel, or suppressor — failure to do so may cause injury. The brace version is neither designed nor intended to be shouldered.

Not a firearm. Chassis only — no fire control group, slide, holster, sling, light, or optic included.

Flux Raider X Chop Top “El Camino” Specifications (161-00040)

Frequently Asked Questions

What does “Chop Top / El Camino” mean?
Flux removed the non-reciprocating optic mount from the Raider X chassis so the package is lower and more concealable, and so a slide-mounted optic can stay with the slide when you swap between pistol and chassis.

Is this a firearm?
No. Flux publishes it as a chassis system only. No firearm, FCU, or slide is included.

What color is this listing?
This listing is Black (BLK) only.

Will suppressor-height sights clear?
Flux states the Chop Top Raider is compatible with optic-mounted slides and suppressor-tall sights.