From a total of 22,736,097 kills with 11,210,692 headshots

Rank	Weapon	Modifier	Kills	%	Ratio	Headshots	%	Ratio	HS:K
1		1.00	7,177,693	31.57%		1,251,200	11.16%		0.17
2		1.20	3,926,639	17.27%		2,895,850	25.83%		0.74
3		1.00	3,634,869	15.99%		2,546,151	22.71%		0.70
4		1.00	2,596,923	11.42%		1,723,018	15.37%		0.66
5		1.20	1,149,885	5.06%		551,144	4.92%		0.48
6		1.20	454,794	2.00%		233,647	2.08%		0.51
7		1.40	448,341	1.97%		290,460	2.59%		0.65
8		1.50	409,313	1.80%		252,496	2.25%		0.62
9		1.00	310,172	1.36%		231,972	2.07%		0.75
10		1.00	264,272	1.16%		178,382	1.59%		0.67
11		2.00	256,736	1.13%		0	0.00%		0.00
12		1.00	246,277	1.08%		181,360	1.62%		0.74
13		1.20	234,476	1.03%		112,536	1.00%		0.48
14		1.80	225,370	0.99%		0	0.00%		0.00
15		1.40	202,995	0.89%		131,827	1.18%		0.65
16		1.10	193,524	0.85%		116,809	1.04%		0.60
17		1.50	174,032	0.77%		98,989	0.88%		0.57
18		1.10	168,304	0.74%		142,491	1.27%		0.85
19		1.40	146,448	0.64%		102,970	0.92%		0.70
20		1.10	124,055	0.55%		39,543	0.35%		0.32
21		1.20	99,796	0.44%		32,257	0.29%		0.32
22		0.80	84,835	0.37%		19,091	0.17%		0.23
23		0.80	84,185	0.37%		18,072	0.16%		0.21
24		1.20	48,691	0.21%		18,895	0.17%		0.39
25		1.50	44,128	0.19%		25,098	0.22%		0.57
26		1.50	29,331	0.13%		16,434	0.15%		0.56
27		5.00	11	0.00%		0	0.00%		0.00
28		5.00	2	0.00%		0	0.00%		0.00