The Micro Fight Chassis will be the central hub of your micro fight chest rig. Everything you decide to add on will anchor to this. When you select your Mk 4 chassis, make sure to also select any magazine insert(s) you need as well. The Micro Fight Chassis WILL NOT hold magazines without an insert. The Mk4 Chassis has two cells that can accept inserts. Covering flaps can be purchases in step 5 (accessories). Once you know what you need, click the products below to select your size/color.