CSA, This is the Chest System Assaulter Platform (Modular). It has three pockets good for holding miscellaneous items such as maps or VS-17 panels. All CSA platforms are made to accept the MPH - Map Pocket Holster (SOLD SEPARATELY). All of our pouches will mount to the CSA. It comes with a fully adjustable four-point release H-Harness and waist belt. This platform is more suited for assault work.