I ran out of room in the subject line, so it is a bit inaccurate. What I meant is that when the Boys Anti-Tank Rifle fires its last round of the magazine, it goes through a bolting animation but makes no sound. Also, bolting after the last round is unnecessary since reloading also bolts. The bug can be found anywhere where the rifle itself is. Sorry I couldn't provide any images or videos--I'll check the tubes for an example.