材质 
M14
2
15.7
14
13.73
23.36
8.98
8.62
0.6
21
20.67
M16
2
17.7
16
15.73
26.75
10.18
9.82
0.6
24
23.67
M20
2.5
22.4
20
19.67
33.53
12.715
12.285
0.8
30
29.67
M24
3
26.4
24
23.67
39.98
15.215
14.785
0.8
36
35.38
M27
3
30.4
27
26.48
45.2
17.35
16.65
1
41
40
M30
3.5
33.4
30
29.48
50.85
19.12
18.28
1
46
45
M33
3.5
36.4
33
32.38
55.37
21.42
20.58
1
50
49