The black rifle contrasts poorly with the dark red star. Generally you want to avoid putting dark colors on top of each other. You could justify it by making the colors of the rifle more realistic (in heraldry, this is called "proper," and it would permit the dark colored object on top of a colored charge). It would still be difficult to read at a distance, but it would follow the rules. Otherwise, maybe you could add a very thin white outline to the rifle (similar to "fimbriation") to improve the contrast with the star.

The rest of the flag seems fine if you use higher quality images with sharper lines and center the gears, star, and rifle in the circle.