Size of muzzle: 6L B1 BT D3 J2 R3 3 7 B2 0 R3.5 3.5 8 B3 R0 R3L 9 B3.5 R1 1 R4 4 B4 OB1 10 4L D1 OB2 R1L 11 5 B0 OB3 R2 12 2 6 B0.5 D2 J1 OB4 R2L 13