From a total of 62,864,418 kills with 29,392,731 headshots

Rank	Weapon	Modifier	Kills	%	Ratio	Headshots	%	Ratio	HS:K
1		1.00	22,966,667	36.53%		3,978,451	13.54%		0.17
2		1.20	11,053,762	17.58%		7,973,963	27.13%		0.72
3		1.00	8,117,607	12.91%		5,734,702	19.51%		0.71
4		1.00	6,327,207	10.06%		4,362,303	14.84%		0.69
5		1.20	3,762,180	5.98%		1,816,675	6.18%		0.48
6		1.50	1,128,864	1.80%		714,305	2.43%		0.63
7		1.40	1,112,891	1.77%		756,456	2.57%		0.68
8		1.20	1,055,917	1.68%		541,451	1.84%		0.51
9		2.00	855,829	1.36%		13	0.00%		0.00
10		1.00	716,483	1.14%		538,866	1.83%		0.75
11		1.80	642,076	1.02%		0	0.00%		0.00
12		1.20	633,312	1.01%		308,081	1.05%		0.49
13		1.00	556,266	0.88%		362,493	1.23%		0.65
14		1.00	553,767	0.88%		402,843	1.37%		0.73
15		1.10	512,693	0.82%		444,277	1.51%		0.87
16		1.40	473,013	0.75%		310,126	1.06%		0.66
17		1.10	432,898	0.69%		260,540	0.89%		0.60
18		1.50	391,086	0.62%		222,170	0.76%		0.57
19		1.40	349,209	0.56%		258,386	0.88%		0.74
20		1.10	296,737	0.47%		95,313	0.32%		0.32
21		1.20	226,020	0.36%		72,183	0.25%		0.32
22		0.80	219,141	0.35%		53,106	0.18%		0.24
23		0.80	197,710	0.31%		44,581	0.15%		0.23
24		1.20	115,913	0.18%		46,416	0.16%		0.40
25		1.50	104,509	0.17%		59,478	0.20%		0.57
26		1.50	62,634	0.10%		35,553	0.12%		0.57
27		5.00	25	0.00%		0	0.00%		0.00
28		5.00	2	0.00%		0	0.00%		0.00