The Flux Defense MP17 is a chassis system and integrated pistol platform that converts a SIG Sauer P320 into a compact PDW-style configuration. The chassis provides a folding brace, forward grip integration, and improved ergonomics for close-quarters use without NFA registration. Flux Defense sells it as a complete pistol with P320 internals. Type: Pistol Action: Semi-Automatic Caliber: 9mm Capacity: 17 Year introduced: 2021, USA Weight: 32 oz Overall length: 10.5" Status: Active Intended use: Personal Defense, Tactical, Vehicle Carry