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