Yes, it’s possible though somewhat improbable. If the vehicle didn’t move then the Basic To Hit Factor (THF) is 3, Point Blank modifier gives THF 2, Hard Cover Modifier gives THF 4. If it had moved the THF would be 5 (no Stabilization for the MGs). For a Regular level unit the To Kill Factor (TKF) is 4. Your HMG has a penetration modifier to make the TKF 3.
So you could have rolled 18 4s and gotten 10 4s to kill (if the Dice Gods were smiling on you).
