No pistol, slide or FCU is included in this sale.Not looking for trades . 

Flux Aluminum Raider Chassis for P365 ($549 retail). Also included in the package is Sig Sauer brand 25 round magazine ($69 retail ). And Big Black Barrel ($189 retail) from Flux:

The Flux Raider is a premium, purpose-built chassis system that converts your pistol into a PDW (personal defense weapon) offering enhanced ergonomics, speed, and durability. 
Recommended slides : P365XL, TACOPS, or P365 FUSE

6″ Big Black Barrel, now harder than ever.

  • 6″ inch barrel for the Raider 365.
  • 9MM.
  • 4150 CMV Steel (same as machine gun barrels)
  • Black Nitride Finish
  • Flux Defense + True Precision.
  • Safer than shorter barrels.
  • Increased velocity over shorter barrels
  • Softer shooting than shorter barrels