I've actually never had a major problem with others distracting me. Once the gun goes off a few times, even if it has a brake, im good. The only thing that does distract me (other than like a .50 bmg/.338 lapua) is the brass ejecting onto me. That can distract/piss me off.
"You'll Never Walk Alone"
"Psycho Murican" -- beeemerdude of Canada