From a total of 26,455,657 kills with 13,135,421 headshots

Rank	Weapon	Modifier	Kills	%	Ratio	Headshots	%	Ratio	HS:K
1		1.00	8,414,589	31.81%		1,481,578	11.28%		0.18
2		1.20	4,642,552	17.55%		3,455,847	26.31%		0.74
3		1.00	4,170,636	15.76%		2,941,337	22.39%		0.71
4		1.00	2,970,610	11.23%		1,986,769	15.13%		0.67
5		1.20	1,334,830	5.05%		640,902	4.88%		0.48
6		1.40	523,592	1.98%		344,559	2.62%		0.66
7		1.20	515,297	1.95%		265,465	2.02%		0.52
8		1.50	506,012	1.91%		319,161	2.43%		0.63
9		1.00	363,881	1.38%		274,675	2.09%		0.75
10		1.00	301,196	1.14%		202,673	1.54%		0.67
11		2.00	294,187	1.11%		0	0.00%		0.00
12		1.00	284,441	1.08%		210,562	1.60%		0.74
13		1.20	269,229	1.02%		129,022	0.98%		0.48
14		1.80	259,988	0.98%		0	0.00%		0.00
15		1.40	231,995	0.88%		151,299	1.15%		0.65
16		1.10	219,279	0.83%		132,748	1.01%		0.61
17		1.10	198,006	0.75%		167,786	1.28%		0.85
18		1.50	191,285	0.72%		108,945	0.83%		0.57
19		1.40	180,414	0.68%		130,409	0.99%		0.72
20		1.10	143,762	0.54%		45,581	0.35%		0.32
21		1.20	111,301	0.42%		35,794	0.27%		0.32
22		0.80	96,335	0.36%		21,863	0.17%		0.23
23		0.80	94,485	0.36%		20,333	0.15%		0.22
24		1.20	55,152	0.21%		21,413	0.16%		0.39
25		1.50	49,462	0.19%		28,046	0.21%		0.57
26		1.50	33,126	0.13%		18,654	0.14%		0.56
27		5.00	13	0.00%		0	0.00%		0.00
28		5.00	2	0.00%		0	0.00%		0.00