The different configurations of MTTCS are constructed using four basic modules. These are:

• 4-foot Center Module with and without gun ring
• 2-foot Center Module
• Roll Cage Module
• Door Module

A typical module configuration, and the one tested at USATEC, is the S424; it is constructed using:

• 2 x 4-foot Center Modules with gun rings
• 1 x 2-foot Center Modules
• 1 X RC Roll Cage Module
• 1 x D Door Module

For fixed postion configurations of MTTCS, special connecting modules are used.