He's blocking Punkbuster screenshots.  And his HSKR's are outta wack. http://prntscr.com/fmk23c

SW40: 52%  .45: 52%  SG553: 50%  M4A1: 49%  AN95: 46%  FAMAS: 46%  G18: 46%  AEK: 46%  Ace52: 43%  Even the Shorty: 32%

Yea, found some good reports to ban him.  A few reports with no sniper rifle kills, but lots of headshots.  It took some time to figure this one out, but we got him.