Here's a reference of a video i would make

The video shows a guy shooting a gun but the actual footage doesn't have any gun muzzle and gun shots audio in it. i feel i can remake a video like this because i have a gun replica at home at my disposal and i feel it is relatively simple to make a video like this. I just need to render in the gun muzzle, light flashes around the room ( which i never saw in the video ), and the sound effects, Following in cue with the video's movement. So in basic words, my video should be something like me cocking a gun and shooting it for roughly 30 to 40 seconds.