0722160800am July 22, 2016 at: 1500 × 834 In: Modern Intermediate Calibers 001: The 5.56x45mm ← Previous Various 5.56mm rounds, left to right: 55gr M193, 55gr French ball, M855 (made in Korea), Mk. 262 Mod. 1, Mk. 318, M855A1