From a total of 66,282,572 kills with 30,508,529 headshots

Rank	Weapon	Modifier	Kills	%	Ratio	Headshots	%	Ratio	HS:K
1		1.00	24,749,182	37.34%		4,229,062	13.86%		0.17
2		1.20	11,643,498	17.57%		8,315,336	27.26%		0.71
3		1.00	8,316,169	12.55%		5,846,282	19.16%		0.70
4		1.00	6,586,099	9.94%		4,515,664	14.80%		0.69
5		1.20	4,030,444	6.08%		1,950,203	6.39%		0.48
6		1.50	1,147,749	1.73%		724,728	2.38%		0.63
7		1.40	1,137,743	1.72%		772,633	2.53%		0.68
8		1.20	1,069,574	1.61%		548,552	1.80%		0.51
9		2.00	893,360	1.35%		13	0.00%		0.00
10		1.00	727,418	1.10%		545,318	1.79%		0.75
11		1.80	681,915	1.03%		0	0.00%		0.00
12		1.20	679,001	1.02%		331,136	1.09%		0.49
13		1.00	565,812	0.85%		409,567	1.34%		0.72
14		1.00	564,799	0.85%		367,153	1.20%		0.65
15		1.10	528,427	0.80%		454,912	1.49%		0.86
16		1.40	485,129	0.73%		317,871	1.04%		0.66
17		1.10	441,918	0.67%		265,289	0.87%		0.60
18		1.50	401,436	0.61%		227,647	0.75%		0.57
19		1.40	355,357	0.54%		261,850	0.86%		0.74
20		1.10	301,904	0.46%		97,152	0.32%		0.32
21		0.80	241,315	0.36%		60,269	0.20%		0.25
22		1.20	230,463	0.35%		73,799	0.24%		0.32
23		0.80	213,684	0.32%		49,092	0.16%		0.23
24		1.20	119,291	0.18%		47,969	0.16%		0.40
25		1.50	106,660	0.16%		60,696	0.20%		0.57
26		1.50	64,198	0.10%		36,336	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