HS are high and he's damage modding. 

35 DMG per hit with CZ-3A1: http://battlelog.battlefield.com/bf4/battlereport/show/1/891514282987969728/1781758311/

40 DMG per hit with MX4 and 49% HS: http://battlelog.battlefield.com/bf4/battlereport/show/1/891158512068943040/1781758311/

41 DMG per hit with MX4 and 52% HS: http://battlelog.battlefield.com/bf4/battlereport/show/1/891149641619299520/1781758311/