SIG Sauer P320 9mm in Flux Defense Raider Chassis (FDE), 5.4 in Threaded Barrel, Herrington Arms Compensator, 30+1, Two 30-Round Magazines and One 17-Round Magazine
This customized SIG Sauer P320 is configured in the Flux Defense Raider chassis in FDE with a spring-assisted, telescoping pistol brace. It features a 5.4 inch threaded barrel (1/2x28) with a Herrington Arms two-port compensator installed, a two-tone FDE/tan and black finish, and a noted 30+1 capacity. The package includes two 30-round magazines, one 17-round magazine, and the original P320 polymer grip module (not installed), offering a versatile setup built around the P320 platform.
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: There are minor, superficial scratches and small finish blemishes present.
What’s Included
- SIG Sauer factory hard case (gray)
- SIG Sauer safety/owner's manual
- Flux Defense Raider P320 chassis with spring-assisted telescoping pistol brace (FDE), installed
- Herrington Arms two-port compensator for 1/2x28, installed
- SIG Sauer P320 polymer grip module (black), not installed
- Two 30-round steel P320-pattern magazines with tan sleeves and one 17-round magazine, as shown
The Flux Defense Raider chassis transforms the P320 into a highly configurable platform. This FDE chassis includes a spring-assisted, telescoping pistol brace, an integrated forward magazine storage well, molded FLUX/RAIDER branding with patent plate, and markings for BACKUP IRONS. A short bottom M1913/Picatinny rail segment provides accessory mounting space, while the top of the chassis has a molded cap marked BACKUP IRONS without M1913 cross-slots.
The 5.4 inch barrel is factory threaded 1/2x28 and is marked accordingly. A Herrington Arms two-port compensator is installed on the threads, complementing the barrel's configuration and keeping the muzzle set up for compatible 9mm devices using the common 1/2x28 pattern.
Controls are set up for practical use, with a dual-magazine release and ambidextrous safety. The pistol is striker-fired and semi-automatic, with a curved trigger. Sights are configured as shown in the photos; the chassis includes molded BACKUP IRONS text.
Capacity is noted at 30+1, and this example comes with two 30-round steel P320-pattern magazines featuring tan sleeves and one 17-round magazine. The configuration pairs a black slide with an FDE/tan chassis and polymer frame components, and the brace is constructed from polymer and metal.
This listing also includes the original SIG Sauer P320 polymer grip module (black), not installed, along with the factory case and owner's manual for a complete package built around the P320/Flux Raider combination.