B&T BWC9-320 Foldable Chassis Kit for SIG320
Overview
The B&T BWC9-320 foldable chassis kit converts the SIG Sauer P320 pistol or FCU into a compact and versatile platform. With its innovative folding system, the chassis allows discreet carry and rapid deployment. The kit includes an Aimpoint ACRO sight for fast target acquisition as well as an operator’s and a safety manual for correct use.
Key Features
- Foldable chassis design for compact transport and quick readiness
- Compatible with SIG Sauer P320 pistol and FCU (including M17 and M18)
- Supplied with Aimpoint ACRO sight
- Delivered with operator’s and safety manuals
- Durable construction for consistent performance
Technical Data
| Compatibility | SIG Sauer P320 pistol and FCU (M17, M18, full-size and compact) |
| Construction | Foldable chassis kit |
| Included Accessories | Aimpoint ACRO sight, operator’s manual, safety manual |
| Function | Converts pistol into foldable chassis platform |
What is the FCU?
The abbreviation FCU stands for Fire Control Unit. It is the serialized core of the SIG Sauer P320 system and contains all essential fire control parts such as trigger, sear, and striker safety. Alongside the barrel and the slide, the FCU is the legally relevant part of the firearm, although this can vary depending on market and applicable legislation. The modular design allows the same FCU to be used across different P320 variants, including M17 and M18.