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