There really isn't much to see, as this is a cell phone video shot at night, but the audio tells of a gun battle with full auto weapons, and not gunshow ARs and AKs. The only semi auto fire that I can tell is at the very beginning.
The back story is that the Mexican military had some drug lord cornered, and a convoy of cartel guys came to get him. I wouldn't bother watching the whole thing; it sounds the same from the first minute til almost the last. It does give you an idea though.