From a total of 28,752,977 kills with 14,328,158 headshots

Rank	Weapon	Modifier	Kills	%	Ratio	Headshots	%	Ratio	HS:K
1		1.00	9,193,482	31.97%		1,630,460	11.38%		0.18
2		1.20	5,092,413	17.71%		3,809,323	26.59%		0.75
3		1.00	4,503,194	15.66%		3,183,814	22.22%		0.71
4		1.00	3,205,862	11.15%		2,153,475	15.03%		0.67
5		1.20	1,431,923	4.98%		687,885	4.80%		0.48
6		1.40	567,621	1.97%		375,728	2.62%		0.66
7		1.50	563,049	1.96%		360,020	2.51%		0.64
8		1.20	552,976	1.92%		284,745	1.99%		0.51
9		1.00	394,847	1.37%		298,847	2.09%		0.76
10		1.00	322,522	1.12%		216,487	1.51%		0.67
11		2.00	315,076	1.10%		0	0.00%		0.00
12		1.00	305,795	1.06%		226,930	1.58%		0.74
13		1.20	288,993	1.01%		138,477	0.97%		0.48
14		1.80	280,224	0.97%		0	0.00%		0.00
15		1.40	248,764	0.87%		162,529	1.13%		0.65
16		1.10	236,240	0.82%		143,187	1.00%		0.61
17		1.10	216,881	0.75%		184,217	1.29%		0.85
18		1.40	204,881	0.71%		150,807	1.05%		0.74
19		1.50	201,954	0.70%		115,221	0.80%		0.57
20		1.10	155,207	0.54%		49,278	0.34%		0.32
21		1.20	119,895	0.42%		38,626	0.27%		0.32
22		0.80	103,084	0.36%		23,374	0.16%		0.23
23		0.80	100,653	0.35%		21,741	0.15%		0.22
24		1.20	59,102	0.21%		22,942	0.16%		0.39
25		1.50	52,906	0.18%		30,013	0.21%		0.57
26		1.50	35,417	0.12%		20,032	0.14%		0.57
27		5.00	14	0.00%		0	0.00%		0.00
28		5.00	2	0.00%		0	0.00%		0.00