Welcome to the board I am glad that my post stirred so much passion that you had to step foward and correct me.

In the Matrix roof there are two zippers that can be opened and it is possible to shoot out of them you are correct. It is my impressionthis panel is more designed for ventilation rather than a stand up shooting port.

This is a picture of how it is done with the ASAT.

Take it with a grain of salt