This assault rifle consists of 1 cube that has been extruded many times. I have used a large amount of edge loops to make some of the curves on the model so that it did not look completely square and to add some detail to the shape. To reduce the amount of triangles I deleted some of the edges and vertices that were not needed.
Here is my concept idea. ![https://drive.google.com/file/d/1eFIfS_l542EM8Lygja4zaoxMMk3MGa0O/view?usp=sharing](http://)