Sig Sauer P320 M17 .357 SIG with Flux Defense Raider X Chassis, 4.7 in Barrel, 18+1, Deployable Brace
This Sig Sauer P320 M17 in .357 SIG is configured in a Flux Defense Raider X chassis, combining the M17 FCU with a deployable brace, top-mounted charging handle, and an integrated forward spare-magazine carrier. It is a full-size, striker-fired setup with a 4.7 inch barrel, ambidextrous manual safety, dual 1913 rails, and a configurable sighting setup. The serial plate shows an M17 prefix, confirming the M17 variant FCU. Two 18-round steel magazines marked "MADE IN ITALY" are included.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: The exterior shows only minimal evidence of prior handling, with faint marks visible on close inspection. The bore presents bright and clean on visual check. Please review the photos for additional details.
What’s Included
- Flux Defense Raider X P320 chassis with deployable pistol brace and integrated forward magazine carrier (installed)
- Top-mounted charging-handle assembly bridging over the slide (installed)
- Two 18-round steel magazines (marked "MADE IN ITALY")
The heart of this configuration is a Sig Sauer P320 M17 FCU paired with a 4.7 inch barrel in .357 SIG, delivering the full-size M17 feature set with an ambidextrous manual thumb safety and striker-fired, semi-automatic operation. The serial plate carries an M17 prefix, confirming its M17-series FCU origin.
The Flux Defense Raider X chassis adds a deployable pistol brace and a top-mounted charging handle that bridges over the slide. It also integrates a forward spare-magazine carrier to keep a second magazine at hand without adding bulk to the grip.
Mounting surfaces include dual 1913 rails: a rail under the forend and a short 1913 rail section at the top rear of the chassis. The slide has front and rear serrations, and the sighting setup is configurable based on the chassis and accessories used.
Capacity is 18+1 with the included two 18-round steel, double-stack magazines marked "MADE IN ITALY." The polymer-based chassis and grip components keep weight manageable while maintaining durability for regular handling and range use.