The red dots used on almost all of the Delta Force guns.

That style of red dot didn't exist until a few years later. At the time it should have been the equally distinct looking "long tube" Aimpoints.

Again, I know it is super nitpicky, but they are so prominent and visible especially with those red lenses throughout the movie. They are only a few years wrong, but it's like if a WW1 movie was full of Thompson submachineguns.

The BDH movie otherwise does a lot of great prop and costume details. Not flawless, but the other inaccuracies are much less noticeable.