This product is one of the products that I designed to convert the Academy M1151 into an M1165 Army Special Forces GMV.

The Academy windshield is not the one used in M1165 GMVs.
I have designed the correct windshield with the goal to keep using the window glasses of the Academy kit.

You can see this product used in the M1165 GMV model I built.
In the same page you can find instructons on how to use it.