I'm selling my awesome Flux Raider setup. This chassis is the best way to turn your Sig into a legit, ultra-compact PDW. It folds up super small, the charging system is lightning quick, and it handles better than any standard pistol. Seriously fun to shoot. And the sig has a 4.7" barrel. This is a complete, ready-to-roll package—just meet up and you're good to go. What's Included in the Deal: The Flux Raider Chassis: The star of the show. Built around the Sig FCU and designed for minimalist, rapid deployment. The Sig 9mm Core: The heart of the build—a proven Sig P320 slide and the FCU, fully assembled in the chassis. Two (2) Factory Mags: You're all set with two mags to get started.