Information on the location
The gun barrel sequence is the signature scene featured in almost every James Bond film (excluding the unoffical James Bond film, Never Say Never Again) starting with Dr. No (1962). Shot from the point of view of a presumed assassin, Bond can be seen walking, turning, and then shooting directly at the camera, causing blood to run down the screen and the white circle fading into the pre-credit sequence. Although retaining the same basic elements, the sequence has evolved noticeably throughout the series.
Appearance in the rap battle
This is the location where James Bond briefly rapped in his first verse during the line, "I only need one round: *gunshot* Golden gun!"