While SMGs have been an extremely good option at short range in Call of Duty Modern Warfare 3 & Warzone for a long time now, choosing the right one has always been quite an arduous task, considering that there are a number of lucrative options available. The HRM-9 has enjoyed its popularity as being one of the most well-rounded SMGs and despite being released only a few months back, it has quickly solidified its place in the Call of Duty Modern Warfare 3 meta.