From a total of 67,511,137 kills with 30,868,674 headshots

Rank	Weapon	Modifier	Kills	%	Ratio	Headshots	%	Ratio	HS:K
1		1.00	25,448,715	37.70%		4,323,716	14.01%		0.17
2		1.20	11,838,682	17.54%		8,423,324	27.29%		0.71
3		1.00	8,375,255	12.41%		5,876,307	19.04%		0.70
4		1.00	6,665,862	9.87%		4,559,456	14.77%		0.68
5		1.20	4,132,981	6.12%		2,000,921	6.48%		0.48
6		1.50	1,154,162	1.71%		728,293	2.36%		0.63
7		1.40	1,145,741	1.70%		777,449	2.52%		0.68
8		1.20	1,073,426	1.59%		550,373	1.78%		0.51
9		2.00	905,780	1.34%		13	0.00%		0.00
10		1.00	730,889	1.08%		547,208	1.77%		0.75
11		1.80	696,036	1.03%		0	0.00%		0.00
12		1.20	686,308	1.02%		334,682	1.08%		0.49
13		1.00	568,192	0.84%		410,762	1.33%		0.72
14		1.00	566,524	0.84%		367,996	1.19%		0.65
15		1.10	533,696	0.79%		458,197	1.48%		0.86
16		1.40	488,958	0.72%		320,166	1.04%		0.65
17		1.10	445,183	0.66%		266,897	0.86%		0.60
18		1.50	404,283	0.60%		229,105	0.74%		0.57
19		1.40	357,168	0.53%		262,811	0.85%		0.74
20		1.10	303,217	0.45%		97,647	0.32%		0.32
21		0.80	245,648	0.36%		61,622	0.20%		0.25
22		1.20	235,548	0.35%		75,798	0.25%		0.32
23		0.80	216,660	0.32%		49,905	0.16%		0.23
24		1.20	120,220	0.18%		48,380	0.16%		0.40
25		1.50	107,286	0.16%		61,057	0.20%		0.57
26		1.50	64,690	0.10%		36,589	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